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filipi87 merged 1 commit into from
Jul 10, 2026
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docs: update for pipecat PR #4999 #988

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4 changes: 2 additions & 2 deletions api-reference/server/services/tts/elevenlabs.mdx
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Expand Up @@ -73,7 +73,7 @@ export ELEVENLABS_API_KEY=your_api_key
`settings=ElevenLabsTTSService.Settings(voice=...)` instead._
</ParamField>

<ParamField path="model" type="str" default="eleven_turbo_v2_5" deprecated>
<ParamField path="model" type="str" default="eleven_flash_v2_5" deprecated>
ElevenLabs model ID. Use a `multilingual` model variant (e.g.
`eleven_multilingual_v2`) if you need non-English language support.
_Deprecated in v0.0.105. Use
Expand Down Expand Up @@ -242,7 +242,7 @@ async with aiohttp.ClientSession() as session:

## Notes

- **Multilingual models required for `language`**: Setting `language` with a non-multilingual model (e.g. `eleven_turbo_v2_5`) has no effect. Use `eleven_multilingual_v2` or similar.
- **Multilingual models required for `language`**: Setting `language` with a non-multilingual model (e.g. `eleven_flash_v2_5`) has no effect. Use `eleven_multilingual_v2` or similar.
- **WebSocket vs HTTP**: The WebSocket service supports word-level timestamps and interruption handling, making it significantly better for interactive conversations. The HTTP service is simpler but lacks these features.
- **Text aggregation**: Sentence aggregation is enabled by default (`text_aggregation_mode=TextAggregationMode.SENTENCE`). Buffering until sentence boundaries produces more natural speech. Set `text_aggregation_mode=TextAggregationMode.TOKEN` to stream tokens directly for lower latency. The `auto_mode` parameter is automatically configured based on the aggregation mode for optimal quality.
- **Word timestamp accuracy**: Word timestamps reflect the original input text by default, preserving non-Latin scripts in transcripts and LLM context. When pronunciation dictionaries are configured via `pronunciation_dictionary_locators`, the service switches to ElevenLabs' normalized alignment to avoid duplicate words caused by dictionary substitutions. Text normalization (`apply_text_normalization`) does not affect which alignment field is used.
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