For AI agents: a documentation index is available at the root level at /llms.txt and /llms-full.txt. Append /llms.txt to any URL for a page-level index, or .md for the markdown version of any page.
Connect
BlogHelp CenterAPI PricingSign up
OverviewElevenCreativeElevenAgentsElevenAPIReception AIAPI referenceChangelog
OverviewElevenCreativeElevenAgentsElevenAPIReception AIAPI referenceChangelog
LogoLogo
Login
Login
Connect
BlogHelp CenterAPI PricingSign up

Changelog

December 8, 2025
December 8, 2025
Was this page helpful?
Previous

November 27, 2025

Next
Built with

Agents Platform

  • Twilio call registration: Added new endpoint to register Twilio calls and receive TwiML response for agent conversations.

Music Generation

  • Word timestamps: Added word-level timestamps to music generation with detailed responses. Enable with the with_timestamps parameter.
  • Fine-tuning support: Added finetune_id parameter to music generation endpoints for using custom music fine-tunes.
  • C2PA content signing: Added sign_with_c2pa option to music generation requests for content authenticity and provenance.

Voices

  • Voice settings expansion: Added voice_stability, voice_similarity, and voice_style parameters to voice endpoints for more granular control.
  • Pagination improvements: Clarified pagination behavior for Get all voices v2 endpoint with better documentation of next_page_token, has_more, and total_count fields.

ElevenCreative Studio

  • Voice settings override: Added voice_settings parameter to project creation for per-project voice configuration.

Webhook Tools

  • Custom request headers: Added request_headers support to Webhook tool configuration for custom authentication and metadata.

Billing

  • Schema improvements: Introduced BillingPeriod and CharacterRefreshPeriod enums for better type safety in subscription models.

Knowledge Base

  • RAG query rewriting: Added query_rewrite_prompt_override to RAG configuration for customizing query rewriting behavior.

SDK Releases

JavaScript SDK

  • v2.27.0 - Updated API schema with latest changes including Twilio registration endpoint and music word timestamps
  • v2.26.0 - Added previous_text event support to Scribe and updated event types

Python SDK

  • v2.26.0 - Fixed websocket disconnection code for user-triggered closures and updated API schema
  • v2.25.0 - Added on-premises agent configuration support, previous_text event support to Scribe, and improved CI reliability

Packages

  • @elevenlabs/react@0.12.1 - Fixed bug with committed transcripts in React components
  • @elevenlabs/agents-cli@0.6.2 - Updated React version
  • @elevenlabs/convai-widget-embed@0.6.0-beta.5 - Improved scroll lock stability in agent widget
  • @elevenlabs/convai-widget-embed@0.5.4 - Fixed auto-scroll behavior, added audioSessionConfiguration to ElevenLabsProvider, and added attributes for worklet scripts

Android SDK

  • v0.7.0 - Added sendToolResult function for client tool support

iOS SDK

  • v3.0.0 - Major release with breaking changes including onDisconnect now receives disconnect reason, added .thinking agent state, updated LiveKit to 2.10.0+, removed AsyncAlgorithms dependency, and added Swift 5.9+ support (previously required Swift 6.0). Includes SDK hardening, improved error handling, alignment data fixes, and agent response metadata support

ElevenLabs CLI

  • @elevenlabs/cli@0.3.2 - Updated React version
  • @elevenlabs/cli@0.3.1 - Fixed SDK dependencies to support recent features

API

View API changes

New Endpoints

  • Register Twilio call - Register a Twilio call and return TwiML for agent conversations

Updated Endpoints

Agents Platform

  • Create agent
    • Added template to AgentDefinitionSource enum
  • Get conversation
    • Added direction field to WhatsAppConversationInfo
    • Added support for API Integration Webhook tool calls and results in conversation transcripts

Music Generation

  • Compose music with detailed response
    • Added optional with_timestamps parameter (boolean) to enable word-level timestamps
    • Added words_timestamps field to response containing array of WordTimestamp objects
    • Added optional finetune_id parameter (string) for custom music fine-tuning
    • Added optional sign_with_c2pa parameter (boolean) for content authenticity signing
  • Compose music
    • Added optional finetune_id parameter (string) for custom music fine-tuning
    • Added optional sign_with_c2pa parameter (boolean) for content authenticity signing
  • Stream music
    • Added optional finetune_id parameter (string) for custom music fine-tuning
  • Stem separation
    • Added optional sign_with_c2pa parameter (boolean) for content authenticity signing

ElevenCreative Studio

  • Add project
    • Added optional voice_settings parameter (array) for per-project voice configuration JSON

Knowledge Base

  • Add to knowledge base
    • Added query_rewrite_prompt_override to RAG configuration
  • Update knowledge base document
    • Added query_rewrite_prompt_override to RAG configuration

Webhook Tools

  • Webhook tool configuration endpoints
    • Added request_headers field (object) to webhook tool API schema configuration for custom HTTP headers

Voices

  • Get voice
    • Added optional voice_stability parameter
    • Added optional voice_similarity parameter
    • Added optional voice_style parameter
  • Get all voices v2
    • Updated next_page_token query parameter description to clarify pagination with has_more field
    • Updated include_total_count query parameter description to note snapshot nature and performance implications
    • Added descriptions for response fields: voices, has_more, total_count, next_page_token
    • Changed next_page_token parameter to allow null values
    • Changed include_total_count parameter to allow null values

Dubbing

  • Dub a video or audio file
    • Made background field nullable in dubbing mix input
    • Made foreground field nullable in dubbing mix input
  • Get dubbing project metadata
    • Made background and foreground fields nullable in response (breaking change - removed nested properties src, content_type, bucket_name, random_path_slug, duration_secs, is_audio, url)

Text to Speech

  • All TTS endpoints
    • Added optional voice_stability parameter where voice settings are supported
    • Added optional voice_similarity parameter where voice settings are supported
    • Added optional voice_style parameter where voice settings are supported
    • Simplified apply_text_normalization description (removed plan-specific note)

Lists and Sorting

  • Get agents
    • Changed sort_by query parameter to allow null values and removed default value
  • Get knowledge base
    • Changed sort_by query parameter to allow null values and removed default value

Billing

  • Subscription endpoints
    • Introduced BillingPeriod enum (replaced inline enum values)
    • Introduced CharacterRefreshPeriod enum (replaced inline enum values)
    • Updated subscription and tier change models to use enum references