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Aug 3, 2026

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EU AI Act compliance

You can now check and enforce AI disclosure for voice agents. For European accounts, EU AI Act compliance is enabled by default, with each agent’s status shown directly in the builder. The check looks for disclosure within the first three spoken sentences, and Charlie can help fix missing disclosures.
EU AI Act compliance check in the agent builder

EU AI Act compliance check in the agent builder

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Appointments with BookingTime

Connect BookingTime, choose an organization and appointment type for each agent, and let the agent find availability and create appointments during calls. When details such as the caller’s name or email address are missing, the agent collects them before completing the booking.
BookingTime integration overview

BookingTime integration overview

  • The same phone number can now handle inbound calls for an agent while remaining available for outbound calls
  • Self-serve accounts can explore telli before choosing a plan; gated actions open the plan selector, where the current plan and billing interval are clearly marked
  • Long Charlie conversations stay responsive while answers stream instead of slowing down as the conversation grows
  • Charlie conversations now have direct URLs, so you can bookmark or share a conversation and reopen it from any app page
  • When you ask where to find or configure something, Charlie can take you directly to more relevant pages across telli
  • Organization owners and admins can set, replace, or remove the organization logo from organization settings
  • Paste screenshots and other supported clipboard files directly into Charlie
  • Knowledge-base uploads respect your plan’s storage limit, and files over 20 MB show a clear error before uploading
  • Warm-transfer timeouts no longer produce tool errors or finalize the same transfer more than once
  • Large contact exports complete in the background, keep their progress after a refresh, and no longer time out for large datasets
  • Signup research no longer restarts when its Charlie conversation is added to the URL, and onboarding test calls use the configured agent draft
  • HubSpot contact sync uses the correct portal after reconnecting and recovers from stale synchronization cursors
  • Collect Data tasks enforce configured minimum and maximum lengths instead of accepting out-of-range responses
  • Call responses and call_ended webhooks expose transfer destination and completion time through transfer
  • Connected inbound calls now populate successful sip_status and sip_status_code values
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Jul 27, 2026

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From signup to your first agent

Getting started with telli is now fully self-serve. Sign up with any email address, let Charlie research your company and build a tailored first voice agent from proven production patterns, make a test call, then choose the plan that fits.
Charlie recommending tailored use cases for a new voice agent after researching the company

Charlie recommending tailored use cases for a new voice agent after researching the company

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Start from a proven use case

Charlie recommends relevant jobs for your agent based on your company website. Choose one and Charlie creates the full instructions, opening messages, and call outcomes from a catalog modeled on 20 successful production agents. A test-call action appears as soon as the agent is ready, and the conversation stays open so you can keep refining it after the call.
  • The agent builder puts the core configuration above the sidebar on smaller screens and lets you collapse long prompt previews
  • First-time invited users enter their name and accept the policies before joining an organization
  • Signup and login now have separate routes with clearer, intent-specific copy
  • telli follows your browser or operating-system language until you explicitly choose a language
  • Optimized raster images reduce the download size of sign-in and affected app pages
  • When a plan or token allowance blocks Charlie, the chat explains the correct reason and links directly to plan selection
  • Zeeg bookings support newer per-location keys, while unsupported custom locations are filtered out instead of failing during a call
  • Charlie retries after an invalid question configuration instead of waiting for an answer to a card that never appeared
  • Charlie question cards no longer expose internal tool-call tags in the app, Slack, or saved conversations
  • Charlie stays open after mobile onboarding navigates to the newly created agent
  • Expired, canceled, or already-used invitation links show a useful error and any other pending invitations
  • Phone verification fraud blocks show accurate retry and alternate-number guidance instead of a temporary outage message
  • Returning to a previous company website during signup refreshes the suggested company name and logo correctly
  • call_ended webhooks include state, final status, and follow_up, matching the modern Calls API fields
  • Scheduling a call with an invalid agent_id returns a structured 400 validation error instead of an internal server error
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Jul 20, 2026

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Charlie in Slack

Charlie now works in Slack. Connect a workspace, choose where Charlie should be available, then mention it in a channel to ask about agents, calls, and results without leaving Slack.
Slack integration page with the expanded overview and Enable action

Slack integration page with the expanded overview and Enable action

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Choose where Charlie works

During setup, select at least one channel for Charlie, then add or remove channels from the integration page as your team changes. If one Slack workspace serves several telli accounts, each channel is assigned to one account and channels already linked elsewhere are clearly marked, so conversations and account data stay separated.
Slack thread where Charlie summarizes weekly call performance with total calls, connection rate, and the busiest agent

Slack thread where Charlie summarizes weekly call performance with total calls, connection rate, and the busiest agent

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Keeps threads and workspaces in context

Charlie reads the messages and files already shared in a thread before the mention and posts its answer back into the same thread. When it needs clarification, it can present answer buttons directly in Slack. Muted threads stay quiet until someone mentions Charlie again.Slack Connect channels route to the correct installed workspace, and replies show which telli account Charlie is working in. Access checks run before Charlie starts work, while direct messages point people to the available linked channels.
  • Schedule a future call directly from a contact’s details, with the agent, date, time, and optional outbound number you want to use
  • Account owners can review their current plan, subscription status, billing period, and usage under Settings > Billing
  • Call ended workflow triggers can filter for connected calls, scheduled follow-ups, not connected calls, and voicemail; call status is also available in conditions and variables
  • Custom HTTP tools support nested JSON objects and recursive arrays in request bodies
  • Outbound-number selectors include numbers reserved for the selected agent across individual calls, bulk scheduling, CSV imports, and test calls
  • Charlie’s streaming work is grouped into collapsible sections, so multi-step changes are easier to follow
  • Address collection understands street names spelled with the phonetic alphabet instead of saving the cue words literally
  • The MCP integration provides setup actions for Claude, ChatGPT, Cursor, Codex, and Claude Code, and lets you review or revoke personal connections
  • Call outcomes now finalize reliably after post-processing and across every session-close path, instead of remaining stuck or publishing an incomplete result
  • Outbound calls retry once after a temporary provider 502 instead of immediately marking the contact as not reached
  • Late voicemail detection corrects the final call outcome instead of leaving the call marked as connected
  • Ending a call loop no longer marks the active contact as not reached before the call finishes
  • Switching organizations preserves valid nested pages such as Billing settings instead of landing on a broader page or a 404
  • Charlie conversations fall back to account context and continue when the focused agent or workflow has been deleted
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Jul 13, 2026

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Charlie through MCP

You can now connect Claude, ChatGPT, Cursor, Codex, and Claude Code to Charlie through MCP. Add the telli MCP server to the AI client you already use, authorize access, then ask Charlie to investigate or complete work in telli without switching tools.
MCP integration page with an expanded overview explaining how AI tools connect to Charlie

MCP integration page with an expanded overview explaining how AI tools connect to Charlie

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Connect the tools you already use

The same remote MCP endpoint works with Claude, ChatGPT, Cursor, Codex, and Claude Code. Your client opens telli for OAuth authorization, so you do not need to copy API credentials into another tool. The connection can work with every telli account you can access, with your current role applied separately in each account.

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Continues after a question

Longer requests can keep running while the MCP client checks Charlie’s progress. If Charlie needs clarification, the client receives the question, sends your answer back, and continues the same conversation instead of making you restart the task.
  • Modular voice agents can fall back across STT, LLM, and TTS providers when a provider fails or responds too slowly, so calls are less likely to stall
  • From Conversations, select the exact transcript turns that need work or submit written feedback, then open Charlie with that context already attached
  • Drop files into Charlie from any page and send an attachment without adding a text message
  • Charlie creates new voice agents through a focused interview, asking one question at a time before building the initial configuration
  • Workflow notification emails can include only the call-outcome fields you select; existing workflows continue to include all fields by default
  • Charlie can return generated files as download cards and shows compact progress while completing multi-step work
  • Conversation searches by phone number respond faster and wait until you pause typing before running
  • Contact CSV exports show progress, open more reliably in Excel, and keep each contact on one row by replacing line breaks in field values
  • Charlie responses recover after a refresh or temporary disconnect instead of leaving the conversation stuck on a stale stream
  • Magic-link codes work even when an email client changes their capitalization or adds surrounding whitespace
  • Removing a contact from the Auto Dialer no longer leaves the contact displayed as active because of a canceled call loop
  • Missing or unauthorized calls no longer trigger a misleading login redirect
  • WhatsApp messages no longer appear in the Scheduled filter, and incompatible call-only filters are cleared when you switch channels
  • Call responses expose the new final call outcome through status, alongside lifecycle and follow-up fields; the legacy call_status field remains available for compatibility but is deprecated
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Jul 6, 2026

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Charlie, everywhere!

Charlie now works everywhere in telli, not just inside the agent builder. Wherever you open it, Charlie adapts to what you have on screen - a workflow, a call, a contact, or your whole set of agents - so you can ask across the account instead of just about the agent you’re editing.
Fullscreen Ask Charlie welcome view focused on a Booking follow-ups workflow, with a WhatsApp appointment prompt typed into the input

Fullscreen Ask Charlie welcome view focused on a Booking follow-ups workflow, with a WhatsApp appointment prompt typed into the input

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Open Charlie from any page

Ask Charlie is just a keyboard shortcut away. The main sidebar auto-collapses to give the chat room, and a new conversation picks up whatever agent, workflow, or call you had open so you don’t have to re-explain the context.

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Builds workflows with you

Charlie can now create and edit workflows directly from chat - it drops in the trigger, condition, and action blocks, asks a clarifying question when it needs one, and proposes the publish before anything goes live.
Charlie chat next to a workflow builder showing it built a Call completed trigger, an If/else answered-call check, and a Send WhatsApp appointment confirmation block, and asks to publish

Charlie chat next to a workflow builder showing it built a Call completed trigger, an If/else answered-call check, and a Send WhatsApp appointment confirmation block, and asks to publish

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Reaches across the account

Charlie can now pull contact activity, agent revision history, and calls from anywhere in your account, and inline pills link agents, workflows, and calls straight to their page. Autocontinue is on by default so multi-step answers keep going without a nudge, and pressing Escape stops generation cleanly.
  • Dutch and French are now available as app languages, including localized emails and date formats
  • The Integrations catalog groups Voice, CRM, and Messaging into tabs, so channel-specific integrations are easier to find
  • Click any image in the in-app changelog to open it in a fullscreen viewer
  • Workflow save warnings name the exact fields that are still missing on each node, so you know what to fix
  • Arrow keys move up and down the contacts list after clicking any row, matching how conversation history already worked
  • Contact imports and the API accept international phone numbers in 0049…, 00 49…, and 491… formats, not just +49…
  • Workflow drafts that are saved but not yet published no longer trigger an “unsaved changes” prompt when you navigate away
  • Hovering an agent’s persona in the agents table shows the full persona description in a tooltip
  • Inbound calls with a real transcript are no longer stuck as “not connected” and now finalize as completed
  • The Auto Dialer respects the max retry days limit even when a retry gets snapped into the next day’s dialing window
  • Post-processing no longer refuses to close calls that have a recording attached
  • The Activity tab in the contact details panel is clickable again
  • The contact property key input shows an inline validation error instead of silently rejecting invalid keys
  • Combobox clear (×) buttons work reliably across the app
  • German labels in the contact filters read correctly again
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Jun 29, 2026

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WhatsApp Business

telli now supports WhatsApp Business alongside voice and SMS. Connect your WhatsApp Business account from Integrations, choose approved templates, and message contacts through the channel they already use.
WhatsApp Business integration tile in the telli integration catalog showing Connected status

WhatsApp Business integration tile in the telli integration catalog showing Connected status

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Send WhatsApp from workflows

Drop the new Send WhatsApp block into any workflow, pick a connected WhatsApp number, select a Meta-approved template, and map template fields to contact data, variables, or custom values for automated follow-ups.
Send WhatsApp block in the workflow builder with a Meta-approved feedback survey template and mapped body fields

Send WhatsApp block in the workflow builder with a Meta-approved feedback survey template and mapped body fields

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Message during a live call

Agents can use a Send WhatsApp tool during calls, so they can send payment links, appointment confirmations, or other approved templates while the conversation is still live.
Send WhatsApp tool dialog in the agent builder with an appointment confirmation template selected

Send WhatsApp tool dialog in the agent builder with an appointment confirmation template selected

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Replies in Conversations

Inbound WhatsApp messages are attached to the same conversation history and contact timeline as voice and SMS, with channel filters in Conversations so teams can follow the full thread.

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Auto Dialer settings

The Auto Dialer is now its own top-level page in the sidebar. Calling strategy, dialing windows, intensity, max attempts, and max retry days are configured once at the account level, and every agent inherits those defaults. You can still override any of them per agent, and a single “Disable for all agents” switch acts as a global kill switch.
  • Deleting a node in the middle of a linear Workflow chain now reconnects the surrounding nodes automatically instead of cascading and orphaning everything downstream
  • Switch option group names are editable inline in the Workflow builder, and the selected-node focus ring matches the node’s tone (brand, warning, success, destructive)
  • HubSpot-synced contacts now show the HubSpot logo in the contacts list and lock CRM-managed fields in the details panel, matching how Salesforce-synced contacts already worked
  • Deep links survive sign-in: opening something like /_/settings/integrations/hubspot while logged out now returns you to that exact page after authentication instead of dropping you on the dashboard
  • Scheduling success toasts name the selected agent in CSV and bulk-schedule flows, so you can confirm at a glance who was assigned
  • The Workflow publish dialog closes immediately on submit instead of holding a spinner, and the publish button no longer overflows on longer translated labels
  • Clearer Auto Dialer copy: “Disable everywhere” reads as “Disable for all agents”, and no-call days now refer to “scheduled follow up calls” instead of “callbacks”
  • Contacts are no longer marked as “reached” after a not-reached-only call loop completes
  • Cal.com event type IDs reject trailing whitespace, which used to save silently and then break bookings at runtime
  • Knowledge base retrieval keeps every relevant context chunk in the final result instead of slicing some of them away
  • POST /v1/phone-numbers/import accepts an optional inOutboundPool boolean (default true), so you can import numbers without automatically adding them to the outbound pool
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Jun 22, 2026

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HubSpot integration

HubSpot is now a first-class CRM integration in telli. Use the new Create Record and Update Record nodes in Workflows to write contacts, companies, deals, tickets, or any other HubSpot object straight from a call, custom fields included.
HubSpot integration settings with OAuth connection and Create Record workflow node

HubSpot integration settings with OAuth connection and Create Record workflow node

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Branded calling for everyone

Branded calling is now available on every telli account. Open Verifications, and once your bundle is verified, assign individual numbers to it so your verified company name shows on the recipient’s phone instead of an unknown number.
Branded Calling tab in Verifications with phone number bundle management

Branded Calling tab in Verifications with phone number bundle management

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Agent-specific outbound numbers

You can now reserve account phone numbers for one agent. The dialer respects the reservation, so that agent only calls from its reserved numbers and stops drawing from the shared pool. Useful when different agents represent different brands, regions, or campaigns and need separate caller IDs.

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Cal.com EU support

If your team is on the EU instance of Cal.com (api.cal.eu), you can finally connect it to telli. The integration setup now includes a Region selector, so your availability lookups and bookings route to the right Cal.com tenant.
  • Importing contacts from CSV no longer blocks the request while we schedule them into call loops. The scheduling runs in the background and you see live progress in the import success step
  • You can force the language for call outcome analysis from the post-processing panel, so multilingual or short calls don’t get classified in the wrong language
  • Transfer schedules and agent dialing windows can now respect your account’s no-call days, so transfers and outbound calls skip public holidays automatically
  • Phone number validation on contacts gives clearer error messages, and the field is editable on the first click after picking a country
  • ElevenLabs TTS no longer stutters, repeats, or garbles spoken words
  • Edits to custom HTTP tools in draft mode now run in test calls; previously the published version was used instead
  • Voice cloning continues past step 4 again, after a regression in the new voice setup flow
  • Cal.com bookings: fully-booked seated slots are filtered out of availability, and the booking location field is handled correctly
  • The country select popover in the phone input closes after picking a country, so the field is immediately editable
  • Office background noise plays again on calls that requested it
  • Team invite emails are sent to the correct recipient
  • Buying a phone number no longer leaves an orphaned Twilio number behind when the purchase request errors out
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Jun 15, 2026

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Address data collection

The Collect Data task has a new address type. Add it to an agent and it walks the caller through providing a complete mailing address (street, city, postcode, country) in one structured step, validating the input and writing the parsed fields back onto the contact. It joins the existing email, license plate, digits, and generic collectors as a first-class option in the builder.
Collect Data task dialog with the new address type selected

Collect Data task dialog with the new address type selected

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Insert workflow blocks from edges

Hover the line between two connected workflow nodes and a small plus appears. Click it to drop a new block in right there, instead of rebuilding the chain through the picker just to slot something in the middle.
Workflow edge with plus icon between two connected nodes

Workflow edge with plus icon between two connected nodes

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Conversations

Voice and SMS now sit together on the new Conversations page. The audio player has 5-second left/right seek shortcuts, a Copy ID action on the header, and red markers on the waveform wherever you’ve left negative feedback so problem spots are easy to find. SMS leaves beta this week, and Conversations is set up to absorb more channels as we add them.
  • The Contacts empty state now shows a one-click Connect button for Salesforce, so new accounts can wire up their CRM without leaving the page
  • Settings tabs scroll horizontally on narrow viewports, so the tab strip no longer overflows or gets clipped
  • Destructive confirmations (delete, disconnect, block, unassign) all use a consistent red action button, so irreversible actions are easier to spot
  • The workflow builder shows a loading state while the canvas mounts, instead of briefly flashing an empty page
  • Long message rows in conversation history are now width-constrained, so transcripts stay readable on wide screens
  • The agent builder sidebar shows a scroll shadow whenever there’s more content below the fold
  • Voice cloning from a recorded sample works again, after a regression in last week’s voice tooling
  • Custom HTTP tools can now leave JSON mode even when the JSON editor contains invalid JSON, so you’re not stuck reformatting before you can switch back
  • Outbound callbacks scheduled after an inbound call no longer fire a duplicate dial
  • Pasting a multi-line value into a templated-string field preserves newlines instead of collapsing them
  • The frontend error page silently retries once before reporting, so transient chunk-load failures right after a deploy stop showing up as crashes
  • Dark mode is fixed on the “Success” and “Your agent is ready!” account-setup screens
  • Zeeg’s duration picker stays visible while you select a duration, and the options now match what Zeeg actually offers
  • The active workflow node renders above its neighbors instead of being clipped
  • The call_ended webhook payload (and GET /v1/calls/:id plus the list endpoint) now include sip_status_code (integer) and sip_status (string), exposing the SIP-level outcome we were already storing on the call
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Jun 8, 2026

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Zeeg calendar

telli now supports Zeeg as a calendar provider alongside Calendly. Connect with an API key, pick a scheduling page, and your agents can check availability and book meetings during a call. Custom invitee questions map to booking fields, so the agent captures the right data and writes it straight to Zeeg.
Zeeg integration settings with scheduling page picker

Zeeg integration settings with scheduling page picker

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Name your versions on publish

You can now give a name to every published version of an agent or a workflow. telli auto-suggests a short title from the diff and you can edit it inline before publishing. Version history, the version picker, and related dropdowns show the title alongside the date and version number, so older revisions are easier to scan.
Publish dialog with auto-generated version title

Publish dialog with auto-generated version title

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Custom prompts for Collect Data tasks

The Collect Data task in the agent builder has a new Prompt behavior. Pick Auto to keep the default sub-agent instructions, or write your own prompt to steer how the email, license plate, generic, or digits task asks for the value, confirms it, and handles edge cases - without touching the main agent prompt.
Collect Data task dialog with Prompt behavior selected

Collect Data task dialog with Prompt behavior selected

  • Agents can now stay on a call for up to 2 hours - the builder slider, validation, and call execution all respect the new limit
  • When buying a phone number, the selection and confirmation now show Voice and SMS capability badges, so you can pick the right number for the job
  • Scheduled calls in the contact timeline now show the agent name and the from-number, matching how past calls already appear
  • Discarding an agent draft now opens a full diff dialog instead of a plain confirm, so you can see exactly which changes you’d lose
  • The Variables panel’s referenced indicator now picks up {{variable}} usage in the inbound and outbound first messages, not only in the main prompt
  • The active tab in the contact details panel (Details or Activity) is now kept in the URL, so deep links and reloads land on the same tab
  • Inbound phone numbers missing a leading + are now normalized, so calls from those numbers route correctly again
  • Up/down arrow navigation in conversation history now works when focus is in the right detail pane, not only in the left list
  • The agent builder prompt scrolls reliably again - the resize handle no longer steals the scroll area
  • The send-SMS-from-number control no longer renders with broken spacing
  • Inbound SMS now show the correct source label in the contact timeline
  • Press Delete or Backspace with selected contacts to open the bulk delete confirmation - typing in form fields is unaffected
  • Press Escape to close an open workflow node panel and return to the workflow canvas
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Jun 1, 2026

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SMS

telli now supports SMS alongside voice. You can text contacts from a workflow, agents can send templated SMS during a live call, and inbound replies land back in the same conversation thread.

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Send SMS from a workflow

Drop the new Send SMS block into any workflow, write your template, and pick which telli number to send from. Use it for post-call follow-ups, scheduled-callback confirmations, or any trigger where a quick text is the right answer. Outbound SMS are billed by usage.
Send SMS workflow block with sender number and message template

Send SMS workflow block with sender number and message template

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Text during a live call

Configure one or more SMS templates on an agent and the agent gets a runtime tool to send the right one mid-conversation. Useful for sending a payment link, a calendar invite, or a callback confirmation while the caller is still on the line.

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Replies in the same thread

When a contact replies to a telli number, the message is attached to the existing thread and shows up in Conversations and on the contact timeline, so SMS context sits right next to voice context.
  • Finnish and Danish are now available as agent languages, with matching voice mappings across the product
  • Agent analytics adapts to your data: turn-count and call-duration buckets scale automatically, and the by-version view has show-all and isolate controls so you can compare versions one at a time
  • Workflow webhooks support templated URLs and encrypted secret values, so you can fan out to any endpoint and authenticate cleanly
  • Call durations show in m:ss in the app, and the call-ended webhook and API payload now include call_length_sec alongside call_length_min
  • The Schedule Call workflow node warns when the selected agent’s Auto Dialer is turned off, so calls don’t queue silently
  • ”Call history” is now “Conversations” across the app, reflecting both voice and SMS
  • The salutation field is back in the manual contact creation form
  • Safari dialogs no longer overflow on small viewports - applies to the shared dialog primitives and to the calendar and knowledge base configuration dialogs
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May 25, 2026

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Trigger Workflows on new contacts

The Workflows trigger picker now includes new contacts. When a contact lands in telli - through CSV import, the API, or any other source - the workflow you’ve enabled for the contact-created trigger runs automatically. Combine actions like updating a property, calling a webhook, or writing the contact to Salesforce, so every new contact follows the same flow without any manual setup.
Workflow trigger picker showing the new contact created option

Workflow trigger picker showing the new contact created option

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Duplicate any workflow

The Workflows list has a new Duplicate action. One click drops in a copy as a disabled draft, so you can edit the new version without touching the original.

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Send a bad call to Charlie for a fix

When you spot a problem in builder call history, click the new Charlie wand next to the thumbs on any agent reply - or leave negative feedback on a call and pick “Try fix with Charlie”. Either way, Charlie picks up the transcript up to that point and proposes a change you can review inline.
  • Outbound calls now play your voicemail message exactly once, even when the assistant and the background detector both react to the same beep
  • Auto Dialer settings have a new account-level timezone, used whenever a contact doesn’t have its own timezone set
  • Agents with their own dialing windows now also respect your account-level no-call days, so configured holidays are skipped no matter how an agent’s own schedule is set
  • Press Space to play or pause the audio player anywhere in the dashboard, and every audio button now has a tooltip explaining what it does
  • Click the title in the agent or workflow breadcrumb to rename it inline - press Enter or click outside to save
  • externalId is available in the agent variable menu, so prompts can reference it directly during a call
  • Phone numbers now use the same readable international format across the phone-number page, call history, breadcrumbs, and blocked-number dialogs, instead of unformatted numbers
  • The “Update contact” workflow node has a clearer label and icon, True/False values look consistent across run details and node summaries, and notification email subjects are cleaned up before sending
  • The contact details panel no longer crashes on older custom property rows, so accounts using legacy properties can open contact pages again
  • The call status icon now matches the actual call status, instead of always showing the ringing icon
  • Pressing Escape in the contacts list closes any open details panel, sheet, or dialog first - a second Escape clears the bulk selection
  • Loading placeholders for blocked phone numbers, call history badges, and filter buttons now match their final sizes, so the layout no longer shifts when data loads
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May 18, 2026

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Filter contacts by property

The Contacts table now lets you filter by contact properties. Combine multiple filters to narrow down to the exact contact set you want, then act on the results - schedule calls, cancel pending dials, or open a single contact - without leaving the page.
Contacts page with the filter menu open showing property options

Contacts page with the filter menu open showing property options

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Block out no-call days

The auto-dialer and “Call me later” now respect specific dates you mark as no-call days. Set public holidays, company-wide closures, or any individual date in dialer settings, and telli skips them automatically instead of placing outbound calls when it shouldn’t.
No-call days settings with Christmas Eve added

No-call days settings with Christmas Eve added

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Block phone numbers from reaching your agents

You can now block specific phone numbers from reaching your agents on inbound calls. Add a number from a call’s details or directly in Settings → Telephony → Blocked phone numbers, and any future inbound call from that number is rejected before it touches an agent. The list is account-wide, and outbound calling is unaffected.
Block a phone number dialog with a number filled in

Block a phone number dialog with a number filled in

  • Import a custom voice from Cartesia or ElevenLabs yourself by pasting its voice ID into voice settings, no request to telli needed
  • Voice settings let you pin a specific voice model per provider, with a Default option that follows telli’s recommendation
  • Agents can schedule callbacks in relative time, like “in 30 minutes” or “in 2 hours”, in addition to absolute times
  • Cold transfers now support SIP URI targets with optional REFER headers, unlocking handoffs to platforms like Zendesk
  • Date inputs gained month and year dropdowns, so far-back dates like birthdates are quick to set
  • Krisp is no longer selectable for background noise reduction in the agent builder - AI Coustics is the recommended replacement, and existing Krisp configs continue to work as legacy
  • Charlie can now show inline voice preview cards in the builder chat, so you can play samples without leaving the conversation
  • Knowledge base retrieval now pulls in sibling chunks from the same article, so the agent gets richer context per match
  • Removing a contact from the Auto-Dialer no longer leaves a stale call loop that blocks deletion of the agent
  • The Agent Builder no longer crashes intermittently when the chat panel loads
  • Salesforce surfaces a clear error when the connected user is missing API access or the session is invalid, with guidance to reconnect
  • Creating a tool with a duplicate name now returns a clear validation error instead of failing generically
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May 11, 2026

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Workflows for every Salesforce object

The Workflows Salesforce action is no longer limited to Lead and Contact. You can now create or update any standard or custom Salesforce object. Build a workflow that writes the call outcome and any data your agent captured to the right Task, Case, Opportunity, or custom object after each call, with no extra integration code.
Workflow Salesforce action with object dropdown showing all available Salesforce objects

Workflow Salesforce action with object dropdown showing all available Salesforce objects

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Persistent chat history in the Agent Builder

Charlie’s chats now stick around. Conversations stay available across reloads and sessions, you can switch between past chats from a history menu, and start a fresh one when you want a clean slate. telli auto-generates a short title for each chat so older threads are easy to scan.
  • A dedicated data collection task captures phone numbers and other digit sequences more reliably than the general task
  • Workflow conditions display as grouped OR/AND blocks, so complex branching logic is easier to read at a glance
  • CSV import now clearly flags duplicate external IDs within the file, so you can resolve them before the import runs
  • Salesforce multipicklist values are now written correctly in post-call automation, instead of dropping selections
  • Calls no longer fail outright when a contact-stored transfer number is invalid - the agent handles it gracefully at runtime
  • Outbound callbacks scheduled via “Call me later” now use the same telli number as the original call, instead of switching to a different one
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May 4, 2026

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Workflows

Workflows let you automate what happens after a call. Pick a trigger, drop in actions and conditions on the canvas, and decide what telli should do with each completed call without writing custom integration code.
Available action blocks include sending call data to a webhook, updating a contact field or custom property in telli, and creating or updating a Salesforce record when Salesforce is connected. Use If/else and Switch conditions to branch on values from the trigger, the call outcome, or any earlier block, so different calls can take different paths through the same workflow.
Workflows builder with trigger, condition, and action blocks

Workflows builder with trigger, condition, and action blocks

Edits stay as a draft while you build, and the canvas flags any block that is incomplete or references a value that no longer exists. Once published, the workflow runs automatically for new completed calls, and you can test it manually from the Runs tab against a real call before relying on automatic execution.
  • New multi-select option for call outcome field type, with matching filters and email conditions
  • Set both max retry days and max attempts on smart dialing - the auto-dialer stops on whichever limit hits first
  • New agentPhoneNumber variable lets prompts reference the number the agent is calling from, so the agent can dictate it back to the caller
  • Transfer destinations in the agent builder now accept variables from the contact, so you can route a transfer to a number stored on the contact record
  • Outbound calls now show the from-number alongside the contact number in call details
  • Notification emails for answered calls with a scheduled callback now include the conversation transcript
  • Audio waveform in call review now highlights the portion matching the messages you select in the transcript
  • telli phone numbers used for testing are clearly marked with a test-only badge
  • Builder remembers resized panel widths between sessions, and tooltips on the first message and timer controls explain what each does
  • Deleting a contact property from Settings now requires a type-to-confirm step, so the action cannot happen by accident
  • Contacts Reached on the dashboard reflects the correct count again
  • Builder bubble menu closes when you click outside the editor
  • Variables panel no longer shows a duplicate tooltip on the referenced indicator
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Apr 27, 2026

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Meet Charlie, your Agent Builder co-pilot

Charlie is the AI assistant in the Agent Builder chat panel. Tell Charlie what you want the agent to do differently, and Charlie drafts the prompt edits. Review each change inline, accept what looks right, and reject the rest without leaving the builder.
Give Charlie context however fits: type an instruction, drop in a screenshot or document, or hold to record a voice message. Attachments preview in the chat before you send. Not sure where to start? The chat surfaces prompt suggestions like reviewing your agent against best practices, so you can run a quick audit and let Charlie propose the edits.

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Smarter data collection in long sequences

When your agent collects several data points in a row, like email, contract number, and license plate, it now coordinates them as one flow instead of handling each as a separate task. The agent stays on track and stops looping back to ask for values the caller already confirmed, so the conversation feels more natural and the data you capture is more reliable.
  • GPT-5.4 mini is now available as an LLM choice for your agents
  • HTTP tools support path parameters, so you can call APIs that put values directly in the URL
  • Refined diff view between agent versions makes it easier to scan changes before you publish
  • Builder chat attachments now show inline previews, with a clearer drop area
  • Navigate between calls in Call History with the up and down arrow keys
  • Call History defaults to completed calls and opens the most recent one
  • telli prompts you to refresh when a new app version is released
  • Selecting messages in the builder chat works reliably again, so you can pull the right snippets from a past call into Charlie
  • Variable suggestions in the prompt editor no longer get clipped by surrounding panels
  • New GET /v1/list-calls endpoint: list calls and filter by contact_id or agent_id
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Apr 20, 2026

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Refine agents from their own call history

The Agent Builder now ties refining an agent and reviewing its calls together in one place. Call History inside the builder gives you an overview, full transcript, and an audio player that follows along with the conversation as it plays, with consolidated filters to find the calls you care about. You can pick individual messages from a past call and bring them into the chat to refine the agent based on what actually happened.
Agent Builder chat input with file upload and voice input controls

Agent Builder chat input with file upload and voice input controls

The builder chat, powered by the most capable reasoning model available today, now accepts file uploads and voice input, so you can hand telli more context without leaving the conversation.

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Version history and version-targeted test calls

Version history is more useful too. Before you publish, you can review a diff of what changed against the live version, restore an older revision when something needs to go back, and start a test call against a specific agent version to verify a change before rolling it out.
Make a test call dialog with agent version selector, phone number pool, and contact picker

Make a test call dialog with agent version selector, phone number pool, and contact picker

  • Builder filters for call history are consolidated into a single menu, so it is easier to narrow down to the calls you want to review
  • Agent and call outcome filters on the calls page are now searchable, so it is faster to find the right value in long lists
  • Call transcripts now show which agent ran the call, making it easier to follow conversations across agents
  • Recording links now resolve correctly when an agent is configured to record only the agent audio
  • Successful calls no longer show a misleading SIP status alongside the result
  • Line spacing in the prompt editor is corrected, so prompts are easier to read while editing
  • The formatting toolbar in the Agent Builder is restored, so you can apply rich text formatting again
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Apr 13, 2026

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New Agent Builder

You can now build and refine agents in the new Agent Builder. Instead of jumping between separate forms, chat, and settings, the builder gives you one cockpit for prompt editing, tools, call behavior, version history, and publish controls. That makes it easier to iterate on an agent, keep track of draft changes, and decide exactly when a new version should go live.
Agent Builder as a central cockpit for chat, settings, version history, and publishing

Agent Builder as a central cockpit for chat, settings, version history, and publishing

Day-to-day editing also feels much smoother. You can stay in the same flow while testing ideas, review earlier versions directly in the builder, and publish changes when they are ready instead of treating every edit like an all-or-nothing update.
  • Czech is now available as an agent language across the product
  • Call end states are more precise, making it easier to understand why a call stopped
  • Variable and tool suggestions in the Agent Builder are easier to use and less noisy while editing
  • Large agent lists are faster to browse
  • Inbound calls are matched and routed more reliably even when caller numbers arrive in different international formats
  • Temporary webhook timeouts, rate limits, and short outages are less likely to drop call updates
  • Non-German calls respond more reliably with improved speech recognition
  • Call openings are less likely to stall while telli infers salutations
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Apr 6, 2026

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Debug mode in call details

You can now switch the conversation view in call details into a debug mode that shows the raw tool trace for a call. This makes it easier to inspect tool calls, arguments, outputs, errors, and timing details without leaving telli when you need to understand why a call behaved a certain way.
Debug mode in call details showing chat turns, timings, and tool output

Debug mode in call details showing chat turns, timings, and tool output

Debug mode is built directly into the call details experience, so you can move between the conversation and the underlying trace in the same place while reviewing a call.

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Arabic and Turkish language support

Agents now support Arabic and Turkish. You can select both languages in the agent configuration, and the language and voice mappings are available across the product so these setups work consistently end to end.
  • Warm transfers now support variables in post-dial DTMF, so you can forward dynamic values like IDs or extensions instead of only static digits
  • Call outcome instructions can now use contact variables dynamically, making it easier to tailor analysis prompts to the current contact
  • Scheduler names can now be renamed inline on the detail page instead of through a separate edit flow
  • The Agents page now shows a clearer empty state with a direct Create Agent action for first-time setup
  • Calendly setup now shows clear errors for invalid API keys and missing permissions, including the required scopes next to the API key field
  • Outbound calls with permanent SIP errors no longer retry unnecessarily when the destination number cannot be reached
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Mar 30, 2026

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Call Scheduler

You can now use Call Scheduler for outbound workflows where time to call matters. Sync contacts from your CRM, create a scheduler, and let telli call new matching contacts automatically as soon as they come in. This is especially useful when new leads should be contacted right away.
You can decide when telli should evaluate a contact, delay the first call when needed, and automatically enroll existing matching contacts in the background when you launch a new scheduler.

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Inbound Contact Lookup

You can now identify unknown inbound callers before the conversation starts. In Settings > Integrations > Inbound Contact Lookup, configure a webhook that receives the caller’s phone number and returns contact details. telli creates or enriches the contact before the agent picks up, so your agent starts the call with the right context immediately.
Inbound Contact Lookup settings with webhook configuration and request-response examples

Inbound Contact Lookup settings with webhook configuration and request-response examples

  • Failed and not-reached calls now show plain-language SIP status explanations in call details
  • The audio player now stays visible while you scroll through long conversation transcripts
  • telli now warns you before queuing contacts while the Auto Dialer is disabled
  • Voicemail and no-dialogue calls are classified more reliably, reducing wrong follow-ups and repeated retries
  • Inbound contact matching is more reliable for duplicate contacts and quick consecutive inbound calls
  • Salesforce connection failures now show clearer errors
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Mar 23, 2026

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Improved inbound routing and callback configuration

You can now configure inbound calls and callbacks separately. In agent settings, callbacks have their own default action and exceptions, so you can decide when the original agent answers, when a callback is forwarded elsewhere, and when it is rejected. There is also an account-level fallback for unmatched inbound calls when telli cannot map the incoming number to an agent or known callback.
Callback configuration with separate callback actions and account-level fallback for inbound calls

Callback configuration with separate callback actions and account-level fallback for inbound calls

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Warm transfer controls

Warm transfers are easier to fine-tune. You can adjust how the agent briefs the human before the transfer and limit how long the destination phone rings before telli cancels the attempt. This makes handoffs more predictable when nobody picks up and gives you more control over the transfer flow.
Warm transfer settings with briefing options and ringing duration limit

Warm transfer settings with briefing options and ringing duration limit

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Multilingual agents

Agents can now be multilingual, and the language picker is easier to use across many supported languages. Open the language dropdown in agent settings to scan the full list or choose the multilingual option when one language is not enough for the workflow.
Agent language settings with the full language dropdown and multilingual option

Agent language settings with the full language dropdown and multilingual option

  • Search directly in the language dropdown when choosing an agent language
  • Call attempt intervals are easier to read with clearer attempt labels and timeline structure
  • Toast notifications have a cleaner, easier-to-scan design
  • The sidebar is restructured into clearer groups, making navigation easier to scan
  • Call audio is more stable, with fewer cases of choppy voice playback and unexpected noises
  • Warm transfer behavior is more reliable again after recent transfer issues
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Mar 16, 2026

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Native Salesforce integration

You can now connect Salesforce in telli and keep contact and lead data in sync with your workspace. Open Settings > Integrations to connect your Salesforce org, review the connection state, and continue into mappings and sync setup from the same flow.

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Custom dashboard date ranges

You can now inspect dashboard metrics for any custom date range. Open the time picker on the dashboard, switch to “Custom”, and choose the exact days you want to review. telli updates the top metrics and charts for that range and compares them against the previous period of the same length.
Dashboard with a custom date range selected

Dashboard with a custom date range selected

  • Contact source visibility is clearer across CRM-synced contacts, including manual creation, import, inbound call, and CRM sync
  • Integration details now show who installed an integration, making setup ownership easier to understand
  • Contact properties are now easier to create and manage directly in the UI
  • Salutations are now inferred across supported languages, not just German
  • API key rotation is now presented more clearly as a destructive action before the current key is invalidated
  • Scheduled call times no longer appear in the past across accounts
  • Long agent names no longer break the picker in call scheduling flows
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Mar 9, 2026

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Agent-level dialing windows and dashboard improvements

You can now set dialing windows per agent instead of only at the account level. In the agent settings under “Auto Dialer”, choose “Override dialing windows” to define a custom schedule for that specific agent. This is useful when different agents serve different regions or should dial at different times of day.
Agent-level dialing windows configuration

Agent-level dialing windows configuration

  • The dashboard now shows 6 key metrics instead of 4, with improved layout and better use of space
  • Dashboard charts show skeleton loading states while data is being fetched
  • Infrastructure improvements to the outbound call scheduler for higher throughput on large campaigns
  • You can now search calls in the telephony page
  • Fixed dashboard not being scrollable when there are many call outcomes
  • Fixed contact search breaking when the query contains special characters
  • Fixed contact sheet not warning about unsaved changes when closing
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Mar 2, 2026

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Agent data collection and more languages

You can now configure your agent to collect structured data from callers during a conversation. In the agent settings under “Data collection”, define tasks for emails, license plates, or custom fields with validation rules. The agent will naturally ask for and confirm each piece of data during the call. After the call, collected values appear in the call details with status indicators.

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More languages

telli agents now support 7 additional languages: Romanian, Swedish, Lithuanian, Hungarian, Bulgarian, Croatian, and Greek. You can set any of these in your agent’s language settings.
Expanded language selection in agent settings

Expanded language selection in agent settings

  • The contacts table now shows the total number of contacts, so you always know how many records you have
  • Voicemail messages can now be limited to the first call attempt only, instead of leaving a message on every retry
  • The default app theme now follows your system preference instead of defaulting to light mode
  • The contacts table now has proper pagination with page navigation
  • Fixed scrambled table columns on narrow screen widths
  • Fixed cursor pagination losing precision on large contact lists
  • Fixed breadcrumb and flag icon shrinking in the contacts table
  • Fixed scrolling issues in the settings page tabs
  • Fixed cropped column names during CSV import
  • Fixed error when importing CSV files with duplicate external IDs
  • Internal tokens like [endCall] are no longer spoken aloud by the agent
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Feb 23, 2026

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In-app changelog

telli now has a built-in changelog. When there are new updates, a “What’s New” card appears in the sidebar. You can also find it anytime in the user menu under “What’s new?” or visit the full changelog in the docs.
What's New sidebar card

What's New sidebar card