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Week 16
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
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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Week 15
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 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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Week 14
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
  • 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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Week 13
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

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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

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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
  • 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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Week 12
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
  • 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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Week 11
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
  • 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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Week 10
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
  • 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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Week 9
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