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livekit-agents@1.5.15

fujiapple852/trippylivekit-agents@1.5.15May 29, 2026by tinalenguyen

AI Summary

Introduces new STT and TTS plugins, improves LLM tool handling and serialization, and fixes critical issues related to IPC, AMD, and OpenAI Realtime integration.

Key Highlights

  • Added Cartesia ink-2 STT support.
  • Added Respeecher TTS plugin.
  • Fixed LLM function tool ordering to ensure invariance.
  • Enhanced OpenAI Realtime to honor OPENAI_BASE_URL environment variable.
  • Updated Google LLM plugin with explicit context caching.

New Features

  • Cartesia ink-2 STT
  • Respeecher TTS plugin
  • Google cached_content option
  • SmallestAI TTS update
  • OpenAI reasoning param

Full Release Notes

## What's Changed
* (openai realtime): add status_details to incomplete response logs by @tinalenguyen in https://github.com/livekit/agents/pull/5873
* feat(cartesia): add ink-2 stt by @charlotte-zhuang in https://github.com/livekit/agents/pull/5827
* fix(ipc): bound AgentSession.aclose() during job shutdown by @longcw in https://github.com/livekit/agents/pull/5875
* fix(amd): defer no-speech timer until SIP call is answered by @chenghao-mou in https://github.com/livekit/agents/pull/5848
* chore(tests): update tests to use Inference whenever possible AGT-2304 by @chenghao-mou in https://github.com/livekit/agents/pull/5632
* fix(llm): sort function tools to make order an invariant by @u9g in https://github.com/livekit/agents/pull/5884
* fix(deps): relax bithuman pin to <3 for SDK 2.x compatibility by @sgu-bithuman in https://github.com/livekit/agents/pull/5882
* fix(aws): flatten tool blocks when toolConfig is omitted by @u9g in https://github.com/livekit/agents/pull/5850
* fix(llm): serialize all provider tools for the Responses API + log server-side tool execution by @u9g in https://github.com/livekit/agents/pull/5865
* fix(llm): make to_responses_fnc_ctx.provider_tool_type optional by @toubatbrian in https://github.com/livekit/agents/pull/5892
* internal(voice): wire DebugMessage over remote-session wire by @toubatbrian in https://github.com/livekit/agents/pull/5855
* Add respeecher tts plugin by @mitrushchienkova in https://github.com/livekit/agents/pull/3233
* feat(plugins-google): add cached_content option for explicit context caching by @kamil-bidus in https://github.com/livekit/agents/pull/5675
* (google llm): ruff and add cache warnings by @tinalenguyen in https://github.com/livekit/agents/pull/5893
* feat(smallestai): update TTS plugin for Lightning v3.1 Pro and WebSocket streaming by @harshitajain165 in https://github.com/livekit/agents/pull/5799
* fix(openai realtime): honor OPENAI_BASE_URL env var fallback by @chenghao-mou in https://github.com/livekit/agents/pull/5895
* livekit-agents@1.5.15 by @github-actions[bot] in https://github.com/livekit/agents/pull/5896

## New Contributors
* @sgu-bithuman made their first contribution in https://github.com/livekit/agents/pull/5882
* @mitrushchienkova made their first contribution in https://github.com/livekit/agents/pull/3233
* @kamil-bidus made their first contribution in https://github.com/livekit/agents/pull/5675

**Full Changelog**: https://github.com/livekit/agents/compare/livekit-agents@1.5.14...livekit-agents@1.5.15