Fast LLM service tier
ElevenAgents can now run supported LLMs on a fast service tier, which trades a per-token price premium for higher token throughput and lower latency. Set service_tier to fast in the agent’s prompt configuration with Update agent, and check which tiers a model supports in the available_service_tiers field returned by List LLMs. The default remains standard, and the LLM usage calculator accepts service_tier to estimate the cost difference.
Knowledge base crawl exclusions
ElevenAgents knowledge base website crawls can now skip parts of a site. Pass up to 50 exclude_patterns to Create crawl job, or fill in the Exclude patterns field in the whole-website crawl dialog, and URLs that match any pattern are skipped even when they match the crawl pattern. Crawl job responses return the patterns that were used. See Knowledge base for crawl setup.
Clone strength for v4 voices
Text to Speech and Text to Dialogue requests now accept clone_strength, a value from 0 to 1 that controls how closely a Professional Voice Clone fine-tuned for a v4 model follows its training samples. Set it in voice_settings on Create speech or in settings on Create dialogue. The recommended value for most use cases is 0. On the Text to Dialogue endpoints, clone_strength now decides whether a v4 PVC runs as a PVC or an IVC, and use_pvc_as_ivc is deprecated.
Expiring service account API keys
Workspaces service account API keys can now expire. Pass expires_at_unix when you create or update a key, or pick an Expire after value in the dashboard, and the key stops working after that time. Expiries must be between 15 minutes and 90 days in the future; omit the field for a key that never expires. See Service accounts.
All changes
ElevenAgents
- Fast LLM service tier: Agents and workflow overrides accept
service_tier(standardorfast) on supported models. List LLMs returnsavailable_service_tiersfor each model, and the LLM usage calculator acceptsservice_tier. - Knowledge base crawl exclusions: Create crawl job accepts
exclude_patterns, and the whole-website crawl dialog adds an Exclude patterns field. Matching URLs are skipped. - Procedures analytics: The Procedures tab on the agent analytics dashboard is available to every workspace. Its Procedure invocations chart shows how often each procedure runs over time, grouped by procedure or by agent, and its tooltip shows whether a procedure is structured or free-form.
- Start procedures at conversation start: Conversation initiation client data accepts
start_procedure_ids, up to five free-form procedures that start when the conversation starts. The agent must haveenable_procedure_ids_from_clientenabled; structured procedures and unknown IDs fail the conversation start. - Structured procedure steps: Structured procedures can use the
end_proceduresystem tool as a step, and the End step is relabeled End conversation. Sub-procedure and end steps now compile to system tool nodes, so agents start and end the intended procedure more reliably. - Channel integrations out of alpha: The Slack, Telegram, Custom Channel and Intercom integrations are no longer in alpha. Freshdesk remains in alpha.
- Slack thread replies: The Slack Channel Message trigger adds a Respond to setting (
response_mode), so an agent can keep replying in a thread after a single mention. Mentioning the agent with onlystop,muteorquietsilences it in that thread until it is mentioned again, and events that Slack delivers twice get one reply. - Test run names: Run tests accepts an optional
name, which test invocations and their summaries return.PATCH /v1/convai/test-invocations/{test_invocation_id}renames a run, and settingnametonullrestores the generated title. - Branch descriptions: Branch descriptions can be edited from the branches table with Update branch (
description, up to 4,096 characters) and appear in the version tooltip and version graph. - Agent duplication keeps traffic splits: Duplicating an agent copies its live traffic split across the copied branches. The resulting deployment records
duplicateas its deployment source. - Delete environment variables:
DELETE /v1/convai/environment-variables/{env_var_id}deletes an environment variable. - Widget fullscreen on mobile: Widget configuration adds
mobile_fullscreen(defaulttrue), with a Fullscreen on mobile switch in the dashboard. Set it tofalseto keep the compact layout on phones. See Widget. - Issues: Triage is renamed Issues in the agents dashboard, and triage tickets are now called issues. Every QA comment and
flag_issue_for_reviewcall opens its own issue, and an issue can be reopened while the conversation has another open issue. The API endpoints keep theirtriage-ticketspaths. See Triage. - Prompt caching guidance: The system prompt editor flags system variables that change on every turn and prevent prompt caching, and Spotlight adds an Improve prompt caching recommendation for affected agents.
- Realtime voice mode: Switching an agent to Realtime voice mode in the dashboard now selects Eleven Realtime v1 Max. Realtime agents always run tool calls in parallel, so the Parallel tool calling toggle is removed from Realtime model settings. See Realtime models.
- Analytics: Workflow analytics can be filtered by channel, and the Guardrails tab is shown to all users.
- Analysis LLMs:
claude-sonnet-5-5can be selected as the analysis LLM for evaluation criteria and data collection, both for the agent and per item. Agents on Claude Sonnet 5.5 can also set reasoning effort tonone. - Conversation cost: Conversation charging adds
voice_surcharge_charge, the credits charged as the voice actor reward for the Voice Library voices a conversation used. It is not included incost. - Call duration and billing: Call charges and stored call duration stop when the call ends, so teardown time after the call is no longer billed or counted. Calls no longer continue for up to 50 seconds after ending when a knowledge base lookup is in progress.
- Telephony: SIP trunk calls forward the
User-To-User(UUI) header to the conversation initiation webhook. API keys with an IP allowlist now authenticate on the Genesys, Avaya, AudioCodes and Amazon Connect connector WebSockets. Batch call recipients whose call cannot be placed are markedfailedinstead of stayingdispatched. - Observability: OpenTelemetry post-call webhook agent turn spans add
elevenlabs.rag.chunksandelevenlabs.rag.used_chunk_ids, matching the JSON post-call webhook. See OpenTelemetry traces. - Guardrails: In voice conversations, the prompt injection guardrail now evaluates the user turn being answered instead of the agent’s previous message. Conversations on asynchronous channels such as Zendesk, Intercom and Custom Channel that a guardrail blocks now report the guardrail as the termination reason.
- Zero Retention Mode: Synthetic voice detection is skipped for conversations in Zero Retention Mode.
- WhatsApp: WhatsApp conversations resumed by a reply to a batch call template keep their
batch_callmetadata and batch ID. - Phone number secrets: Workspace secrets used as a Twilio auth token or an Exotel API token on a phone number show as in use and cannot be deleted while the number depends on them.
- Fixes: Text conversations end as soon as the
end_calltool runs instead of waiting for the next user message. Voice agents no longer go silent when a turn is cancelled before any audio is sent. The soft timeout no longer fires right after the first message or after tool calls on Eleven v4 voices. Realtime agents with sub-agent, agent tool or prompt say nodes that inherit the LLM can be saved and published. Agent tools that use OAuth2 connections no longer fail with expired tokens when the provider rotates refresh tokens. Thenemotron-35-super-vl-nvfp4context limit is raised from 64,000 to 131,072 tokens.
Text to Speech and Text to Dialogue
- Clone strength:
clone_strength(0 to 1) in Text to Speechvoice_settingsand Text to Dialoguesettingscontrols how closely a Professional Voice Clone fine-tuned for a v4 model follows its samples. The recommended value for most use cases is 0. Edit voice settings storesclone_strengthand Get voice settings returns it. - PVC and IVC on v4 dialogue: On the Text to Dialogue endpoints,
clone_strengthnow decides whether a v4 PVC runs as a PVC or an IVC, anduse_pvc_as_ivcis deprecated.
Voice Changer
- New endpoint paths: Voice Changer is documented at
POST /v1/voice-changer/{voice_id}andPOST /v1/voice-changer/{voice_id}/stream. The/v1/speech-to-speech/{voice_id}paths keep working but are deprecated and removed from the API reference. The Python and JavaScript SDKs call the new paths from v2.75.0, and the SDK method names are unchanged for now. In the next major SDK version,client.speechToSpeechwill be deprecated in favor ofclient.voiceChangerto match the endpoint. See Voice changer.
Workspaces
- Expiring service account API keys: Service account API keys accept
expires_at_unixon create and update, between 15 minutes and 90 days in the future. Later expiries are rejected with400invalid_api_key_expiry. On update, pass"clear"to remove an expiry. - Group concurrency limits enforced: The workspace group concurrency limits (
group_concurrency_limit,group_dubbing_concurrency_limitandgroup_music_concurrency_limit) are enforced for Text to Speech, Voice Changer, Music and Dubbing requests. - Voice cloning permissions: Members without the Create instant voice clone or Create professional voice clone permission can no longer create clones, even with general voice access.
- SCIM group seat types: Workspaces that use SCIM without SCIM routing can assign a seat type to SCIM-synced groups from the Groups page.
- Fixes: Delete invite returns
404invite_not_foundfor an invite that does not exist, instead of a500error.
Speech to Text
- Shorter realtime silence thresholds: Realtime Speech to Text honors
vad_silence_threshold_secsvalues below 0.5 seconds, which were previously treated as 0.5. The minimum accepted value is lowered from 0.3 to about 0.19 seconds. - Webhook retries: Transcription and error webhooks are retried on failure when the webhook’s retry setting is on. See Speech to Text webhooks.
Dubbing
- Legacy endpoints deprecated: The
/v1/dubbingendpoints outside/v1/dubbing/project, including Dub a video or an audio file and List dubs, are marked deprecated in the API reference. - Transcript downloads: The dubbing project menu can download target language transcripts as JSON, and as WebVTT subtitles for recent dubs.
Studio
- Media folders: Workspace library files can be organized into folders in the Studio media browser.
- Video clip actions: Video clips offer voice changer and voice isolator actions.
- Video to music: Studio’s video to music workflow uses Music v2.5 by default.
Image and video
- Retired models: Image & Video and Flows requests for a retired model fail before generation with a
410model_retirederror that names the replacement model. Flows preflight reports the error on the affected node. - Fixes: Generations wait for a just-uploaded reference asset to finish processing instead of failing.
Voices
- Fixes: Cantonese Professional Voice Clone samples are no longer rejected when language detection reports Chinese, and adding PVC samples no longer fails with a
500error when language detection is unavailable.
Billing
- Minimum charge: Text to Speech and Speech to Text requests priced below one credit are charged one credit, and refunds return exactly the credits that were charged.
- Business plan image and video pricing: Business plans on the current pricing pay the same image and video credit rate as other self-serve plans, about 17% fewer credits per image and per video second than before.
Realtime Translation
- OAuth scope: OAuth clients can request the
realtime_translationscope.
SDK releases
JavaScript SDK
- v2.75.0 -
client.speechToSpeech.convertandclient.speechToSpeech.streamnow callPOST /v1/voice-changer/{voice_id}and its/streampath. Addedclient.environmentVariables.delete,client.conversationalAi.tests.invocations.updatefor renaming a test invocation, and an optionalnameonclient.conversationalAi.agents.runTests. Also addsserviceTieron the LLM usage calculators,excludePatternson knowledge base crawl jobs,expiresAtUnixon service account API keys,cloneStrengthin voice settings,startProcedureIdsin conversation initiation client data and the widgetmobileFullscreensetting. The legacy dubbinglist,create,getanddeletemethods are marked deprecated, and the branch rebase request typeBranchesRebaseRequestis renamed toBodyRebaseABranchOntoMainV1ConvaiAgentsAgentIdBranchesBranchIdRebasePost.
Python SDK
- v2.75.0 - Added the
callback_disconnectoption toConversationandAsyncConversation. It receives aDisconnectionDetailswith areasonof"user","agent"or"error", plus the WebSocket close code and reason when available, and replaces the deprecatedcallback_end_session. The regenerated client movesclient.speech_to_speechto the/v1/voice-changerpaths and addsclient.environment_variables.delete,client.conversational_ai.tests.invocations.updateand the same new parameters as JavaScript SDK v2.75.0.
Android SDK
- v0.13.0 -
agent_tool_requestis now handled as a notification event instead of a client tool call, so client tools no longer run twice, the first time without parameters. The SDK also no longer crashes when a client tool answers after the connection has closed.
ElevenLabs CLI
- v1.7.1 -
sayuseseleven_v4and new agent templates useeleven_v4_turboby default. Fixesonboardsign-in on Windows and when the token cannot be saved to the keychain.
Packages
- @elevenlabs/client@1.29.0 and @elevenlabs/react@1.19.0 - Added the
onAudioAlignmentPlaybackcallback, called with{ event_id, alignment }when an aligned audio chunk starts playing, for syncing text with speech. It is not called on WebRTC connections. - @elevenlabs/client@1.30.0 - Added the opt-in
stripAudioTagssession option, which removes audio tags such as[laughs]from agent messages passed toonMessageandonAgentResponseCorrection, and exports thestripAudioTagshelper. Stripped text no longer lines up withonAudioAlignmenttimings. - @elevenlabs/client@1.31.0, @elevenlabs/types@0.26.0 and @elevenlabs/react@1.20.0 - Added
overrides.tts.modelIdfor a per-conversation TTS model override. Realtime Speech to Text emitsRealtimeEvents.AUDIO_STARTEDonce the first microphone audio frame is sent, anduseScribein microphone mode reportsconnectedonly from that point. - @elevenlabs/convai-widget-core@0.21.0 and @elevenlabs/convai-widget-embed@0.21.0 - Voice call transcripts are revealed in step with the agent’s speech, and an interrupted reply keeps only what was said. Resuming a persistent text conversation no longer asks the user to accept the terms again.
- @elevenlabs/convai-widget-core@0.21.1, 0.21.3 and 0.21.4 - Text chat shows typing dots while the agent prepares its reply. Rich content carousels show a page indicator, stay clickable after the conversation moves on, and appear in voice calls while the agent is still speaking. On screens narrower than 768px the chat opens fullscreen; add
mobile-fullscreen="false"to the embed to keep the compact layout. - @elevenlabs/react-native@1.2.31, 1.2.32 and 1.2.33 - Updated to the latest
@elevenlabs/clientand@elevenlabs/reactreleases.
API changes
New endpoints
ElevenAgents
DELETE /v1/convai/environment-variables/{env_var_id}- Delete an environment variable. Returns204.PATCH /v1/convai/test-invocations/{test_invocation_id}- Rename a test invocation with requiredname(string, 1 to 256 characters, ornullto restore the generated title).
Voice Changer
- Voice changer -
POST /v1/voice-changer/{voice_id}and Voice changer stream -POST /v1/voice-changer/{voice_id}/stream- The documented paths for Voice Changer.POST /v1/speech-to-speech/{voice_id}andPOST /v1/speech-to-speech/{voice_id}/streamare removed from the API reference and deprecated.
Updated endpoints
ElevenAgents
- Create agent, Get agent and Update agent
- Prompt configuration adds
service_tier(standardorfast, defaultstandard). Workflow node prompt overrides add nullableservice_tier. - Widget configuration adds
mobile_fullscreen(boolean, defaulttrue).
- Prompt configuration adds
- List LLMs - Each model adds required
available_service_tiers(array ofstandardorfast). - Calculate LLM usage and Calculate expected LLM usage for an agent - Added optional
service_tier. - Get widget - Widget configuration adds
mobile_fullscreen(boolean, defaulttrue). - Create crawl job - Added optional
exclude_patterns(array of strings, up to 50 items of up to 2,048 characters each). - Get crawl job and List crawl jobs - Crawl jobs add
exclude_patterns(array of strings). - Knowledge base document responses -
auto_sync_inforemoves the deprecatedauto_discoverfield. - Run tests - Added optional
name(string, 1 to 256 characters). Get test invocation and List test invocations return nullablename. - Update branch - Added optional
description(string, up to 4,096 characters). Pass an empty string to clear it. - Get conversation details
- Conversation charging adds nullable
voice_surcharge_charge(integer). - Agent definition source enum adds
architect.
- Conversation charging adds nullable
- Agent deployments (
GET /v1/convai/agents/{agent_id}/deployments) - Deployment source enum addsduplicate. - Conversation initiation client data, including the
conversation_initiation_client_dataWebSocket event and Submit batch call - Added optionalstart_procedure_ids(array of strings). - Tool type enum removes
api_integration_mcp.
Text to Speech and Text to Dialogue
- Create dialogue, Stream dialogue and their timestamp variants -
use_pvc_as_ivcis deprecated. - Text to Speech
voice_settingsand Text to Dialoguesettings- Added nullableclone_strength(number, 0 to 1). Get voice settings, Get voice and List voices return it.
Dubbing
- List dubs, Dub a video or an audio file,
GET /v1/dubbing/{dubbing_id},DELETE /v1/dubbing/{dubbing_id},GET /v1/dubbing/{dubbing_id}/audio/{language_code}andGET /v1/dubbing/{dubbing_id}/transcripts/{language_code}/format/{format_type}- Marked deprecated.
Workspaces
- Create service account API key - Added optional
expires_at_unix(integer ornull). - Update service account API key - Added optional
expires_at_unix(integer, or"clear"to remove the expiry; omit to leave it unchanged). - List service accounts and List service account API keys - API keys add nullable
expires_at_unix(integer).