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Inference: Improved support for mid session TTS updates #4412

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chenghao-mou merged 1 commit into from
Jan 3, 2026
+8 −0
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Inference: Improved support for mid session TTS updates #4412

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8 changes: 8 additions & 0 deletions livekit-agents/livekit/agents/inference/tts.py
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Original file line number Diff line number Diff line change
Expand Up @@ -502,6 +502,14 @@ async def _sentence_stream_task(ws: aiohttp.ClientWebSocketResponse) -> None:
async for ev in sent_tokenizer_stream:
token_pkt = base_pkt.copy()
token_pkt["transcript"] = ev.token + " "
generation_config: dict[str, Any] = {}
if self._opts.voice:
generation_config["voice"] = self._opts.voice
if self._opts.model:
generation_config["model"] = self._opts.model
if self._opts.language:
generation_config["language"] = self._opts.language
token_pkt["generation_config"] = generation_config
token_pkt["extra"] = self._opts.extra_kwargs if self._opts.extra_kwargs else {}
self._mark_started()
await ws.send_str(json.dumps(token_pkt))
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