livekit-agents@1.8.1 livekit-agents@1.8.2
fosrl/pangolinSep 10, 2026 → Sep 15, 20265 days between releases
What's New
Performance optimizations and observability added in v1.8.2
Breaking Changes
- Removed dead `VertexModels` type alias which may break existing code.
New Features
- Loop blocking detection in Agent Insights
- Faster agent startup via prefork server library preloading
- Enhanced agent lifecycle tracing covering full latency
- Synthesia interactive-avatar plugin
- ElevenLabs secondary languages and language detection
Improvements
- Improved Deepgram STT socket detection to prevent hanging
- Fixed repositioning of mid-conversation instructions for Gemini and Mistral
- Pinned Anthropic dependency to prevent version conflicts
- Added Speechify attribution header
- Removed unused audio forwarding buffer and adapter metrics streams
Bug Fixes
- Fixed refusal to start DuplexModel under text simulation
- Fixed TTS prewarm replacement issues
- Fixed telemetry session report option object descriptions
- Fixed Deepgram V2 STT commented-out keepalive stub
- Drained unused adapter metrics streams
Upgrade Notes
The dead `VertexModels` type alias has been removed; update code accordingly. The DuplexModel now refuses to start under text simulation, which may affect test environments.
The Two Releases
livekit-agents@1.8.1
Sep 10, 2026· 1 month ago
A major feature release introducing full-duplex speech model support via the new `DuplexModel` class, starting with OpenAI's GPT-Live model. The release also includes various bug fixes and new telemetry capabilities.
Full release noteslivekit-agents@1.8.2
Sep 15, 2026· 1 month ago
This release focuses on performance optimizations and observability, introducing loop blocking detection, faster agent startup times, and comprehensive lifecycle tracing. It also adds new plugins and improvements to existing integrations like ElevenLabs and Deepgram.
Full release notes