New Features
- Add self-service avatar creation in Studio (Custom Avatars)
- Add multi-factor authentication (MFA) for Studio accounts
- Add an invoices page in Studio settings with payment details and PDF downloads
- Add support for
cartesiaagent TTS configs - Add new region: asia-south1 (India)
Updates
- Avatars: Faster session startup thanks to avatar prefetching and parallel downloads
- Avatars: Reduced delay before the avatar starts speaking
- Agents: Changed default TTS to Cartesia Sonic 3.6 (from ElevenLabs Flash 2.5)
- Agents: Redesigned the conversation UI, including the pre-join and post-call screens
- Agents: Improved knowledge base handling to support larger files at lower latency
- Agents: Raised the knowledge file text limit from 100,000 to 250,000 characters (both in API and Studio)
- Studio: Redesigned the feedback flow to be less intrusive
- API: Renamed “Call” to “Conversation”:
/v1/callsis now/v1/conversations - API: Renamed
POST /v1/callstoPOST /v1/livekit-rooms(“Create LiveKit Room”) in a new “Agent Integration” group. You only need it when embedding a conversation via a LiveKit Client SDK - API: Old endpoints keep working but now return a
Deprecationheader with aLinkto their replacement
Bug Fixes
- Fix agents failing to start when a linked knowledge file was deleted
- Fix Google TTS for voices other than Chirp 3 HD
- Fix avatar audio occasionally stalling or skipping very short replies
- Fix avatar sessions not ending cleanly when the room closes before the agent joins
- Fix saving custom branding background URLs in Studio
- Fix incorrect avatar slot calculation; slots now correctly follow your plan (Concurrency & Quotas)
- Improve Studio sign-in error messages and fix a Google sign-in issue
Documentation
- Update Custom Avatars
- Add Knowledge Base guide
Breaking Changes
- Retired Genesis-1 video model: calls, sessions, and videos using a Genesis-1 avatar now return
410 Gone. All existing Genesis-1 avatars were already silently upgraded to Genesis-2.
Avatars
- Improve avatar lip sync by giving the model full audio history
- Improve session stability while avatar models are loading
Managed Agents
- Changed default OpenAI LLM to GPT 5.4 mini
- Declare AI interaction in the pre-join screen and in-call UI (following EU AI Act Art. 50.1)
- Fix room audio occasionally not being attached at the start of a call
Studio
- Added organizations with user management, role-based access control, and collaboration support
- Text-to-video generation now includes visible watermarks (following EU AI Act Art. 50.4)
Documentation
- Redesign docs structure & navbar
- Redesign onboarding and “Get Started” section: Add Choose Path and quickstarts for Speech-to-Video and Managed Agents
- Update Roadmap
- Add Production Guides section with Concurrency & Quotas, GDPR & Privacy, EU AI Act, On-Prem Deployment, and Troubleshooting pages
- Document API error codes
- Add page context menu to copy a page or open it in an AI assistant
New Features
- Add avatar emotion control for more expressive, natural conversations
- Support agent creation with external / custom LLM config
- Support avatar creation via direct file upload
Studio
- Launch new revamped Studio experience with usage analytics, mobile support, and dark theme
Documentation
- Update API docs
New Features
- Add continuous vision agents for real-time perception
- Improve avatar idle animations
- Add message-logging control per agent
- Add billed-minutes usage API
Miscellaneous
- Add on-prem / enterprise deployment option
New Features
- Support custom avatar backgrounds
- Add custom user fields on calls in the developer API
Miscellaneous
- Improve API endpoint latency
New Features
- Add more speech-to-text (STT) providers for agents
- Add external / custom LLM support for agents
- Add Arabic (ar-SA) language support
- Add plan-based feature gating
Studio
- Add video generation support for Genesis-2 avatar videos
New Features
- Add Delete Avatar endpoint
- Support Genesis-2 avatar training from the dashboard
- Add agent usage tracking
New Features
- Add Knowledge Base files API
- Add session status and start/end timestamps
Miscellaneous
- Serve downloads and previews via CDN
New Features
- Add session concurrency limits
- Add conversation transcripts via API
- Add ElevenLabs custom voice support
- Add Webhook events
Miscellaneous
- Add new region: europe-west1
New Features
- Add JavaScript support to LiveKit plugin
- Update API reference with Update Agent endpoint
- Update speech-to-video with Pipecat integration
Miscellaneous
- Embed demo as iframe in Getting Started
- Update stock avatars