Fix/stt fallback adapter propagate aligned transcript#5237
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davidzhao merged 2 commits intolivekit:mainfrom Mar 27, 2026
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FallbackAdapter hardcodes aligned_transcript=False in STTCapabilities, even when all underlying STT providers support it. This silently disables adaptive interruption handling, which requires aligned transcripts.
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davidzhao
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osimhi213
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…endor * upstream/main: Baseten Plugin Update: fix metadata schema, add chain_id support, and improve response parsing (livekit#4889) feat(anthropic): support strict tool use schema (livekit#5259) feat(mistral): add voxtral TTS support (livekit#5245) Fix/stt fallback adapter propagate aligned transcript (livekit#5237) fix: expose endpointing_opts in AgentSession.update_options() (livekit#5243) fix(utils): improve type annotation for deprecate_params decorator (livekit#5244) (google realtime): add gemini-3.1-flash-live-preview model (livekit#5233) fix: Nova Sonic interactive context bugs and dynamic tool support (livekit#5220) feat(assemblyai): add domain parameter for Medical Mode (livekit#5208) fix: ensure MCP client enter/exit run in the same task (livekit#5223) feat(google): add VertexRAGRetrieval provider tool (livekit#5222)
osimhi213
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* upstream/main: Baseten Plugin Update: fix metadata schema, add chain_id support, and improve response parsing (livekit#4889) feat(anthropic): support strict tool use schema (livekit#5259) feat(mistral): add voxtral TTS support (livekit#5245) Fix/stt fallback adapter propagate aligned transcript (livekit#5237) fix: expose endpointing_opts in AgentSession.update_options() (livekit#5243) fix(utils): improve type annotation for deprecate_params decorator (livekit#5244) (google realtime): add gemini-3.1-flash-live-preview model (livekit#5233) fix: Nova Sonic interactive context bugs and dynamic tool support (livekit#5220) feat(assemblyai): add domain parameter for Medical Mode (livekit#5208) fix: ensure MCP client enter/exit run in the same task (livekit#5223) feat(google): add VertexRAGRetrieval provider tool (livekit#5222)
osimhi213
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* feat(google): add VertexRAGRetrieval provider tool (livekit#5222) * fix: ensure MCP client enter/exit run in the same task (livekit#5223) * feat(assemblyai): add domain parameter for Medical Mode (livekit#5208) * fix: Nova Sonic interactive context bugs and dynamic tool support (livekit#5220) Co-authored-by: Pavas Kant <pavkan@amazon.com> * (google realtime): add gemini-3.1-flash-live-preview model (livekit#5233) * fix(utils): improve type annotation for deprecate_params decorator (livekit#5244) * fix: expose endpointing_opts in AgentSession.update_options() (livekit#5243) * Fix/stt fallback adapter propagate aligned transcript (livekit#5237) * feat(mistral): add voxtral TTS support (livekit#5245) * feat(anthropic): support strict tool use schema (livekit#5259) * Baseten Plugin Update: fix metadata schema, add chain_id support, and improve response parsing (livekit#4889) --------- Co-authored-by: Yousuf Bukhari <25112850+youpesh@users.noreply.github.com> Co-authored-by: Long Chen <longch1024@gmail.com> Co-authored-by: Martin Schweiger <34636718+m-ods@users.noreply.github.com> Co-authored-by: Osman-AGI <uyguripek@gmail.com> Co-authored-by: Pavas Kant <pavkan@amazon.com> Co-authored-by: Tina Nguyen <72938484+tinalenguyen@users.noreply.github.com> Co-authored-by: Milad <129620931+miladmnasr@users.noreply.github.com> Co-authored-by: Jean Perbet <jeanperbet@icloud.com> Co-authored-by: Shaik Faizan Roshan Ali <roshan.shaik.ml@gmail.com> Co-authored-by: jiegong-fde <jie.gong@baseten.co>
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Summary
stt.FallbackAdapterhardcodesaligned_transcript=Falsein itsSTTCapabilities,even when all underlying STT providers support it. This silently disables adaptive
interruption handling, which checks
stt.capabilities.aligned_transcriptin_resolve_interruption_detection().This fix derives
aligned_transcriptfrom the child STTs — if all support it,use the primary provider's value; otherwise
False.Fixes #5236