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March 18, 2026
API Changes

Voice Settings & Fish Audio

  • Added additional voice settings for more granular control over avatar speech
  • Added access to Fish Audio as a TTS provider
  • New [GET] /v1/languages endpoint to clarify which languages are currently supported
We will continue clarifying how the language parameter interacts with FULL mode systems.
February 20, 2026
API Changes

ElevenLabs Integration

  • The v1/secrets endpoint now accepts ElevenLabs API keys
  • FULL mode sessions can now start with your own ElevenLabs keys and voices
  • Added integration with ElevenLabs Agent functionality
February 17, 2026
API Changes

LLM Plugin & Session Controls

  • Introduced LLM Plugin for custom LLM configurations
  • Added customizable session duration controls
  • Transcription chunk events are now emitted in real-time
  • New endpoint to track user credit balances
February 3, 2026
API Changes

Session Configuration & LITE Mode

  • New session configuration options for video codec selection (H.264 / VP8)
  • Added video quality control settings
  • Added voice customization options
  • CUSTOM mode has been renamed to LITE mode (backward compatible)
  • Bug fix: resolved opening line speech issues
January 26, 2026
API Changes

Push-to-Talk

  • Released Push-to-Talk functionality for avatar sessions
  • Added accompanying documentation and integration guides
January 13, 2026
API Changes

Sandbox Mode & FULL Mode Improvements

  • Introduced Sandbox Mode for testing without credit charges
  • Made context optional in FULL mode configurations, reducing required setup
January 8, 2026
API Changes

Custom Mode & Session List Updates

  • Custom Mode now exposes LiveKit Agent token for developers to integrate their own agents
  • Session List endpoint updated to use query parameters
November 2025
New Endpoint

Transcription Endpoint

  • New [GET] /v1/sessions/{session_id}/transcript endpoint
  • Enables developers to retrieve transcriptions between users and avatars in FULL mode sessions
November 2025
New Endpoint

Sessions List Endpoint

  • New [GET] /v1/sessions endpoint
  • Allows listing of both active and previously active sessions