# June 15, 2026

## UpdateListen: On-the-Fly Listen Configuration

You can now update the Listen configuration during a conversation without restarting the session. Send an `UpdateListen` message to tune:

- `eot_threshold` — end-of-turn confidence threshold
- `eager_eot_threshold` — eager end-of-turn confidence threshold
- `eot_timeout_ms` — hard timeout for turn completion
- `keyterms` — keyword boost list
- `language_hints` — language bias for multilingual models

The payload nests tunable fields under `listen.provider`, matching the shape used in the `Settings` message. The provider identity (`type`, `version`, `model`) is required and must match the current session.

```json
{
  "type": "UpdateListen",
  "listen": {
    "provider": {
      "type": "deepgram",
      "version": "v2",
      "model": "flux-general-multi",
      "eot_threshold": 0.8,
      "eager_eot_threshold": 0.5,
      "eot_timeout_ms": 3000,
      "keyterms": ["Deepgram", "speech-to-text"],
      "language_hints": ["en", "es"]
    }
  }
}
```

`UpdateListen` is a partial update — omitted tunable fields keep their current value, except `language_hints` which resets to empty when omitted. Always re-send `language_hints` if you want to preserve language biasing.

The server responds with a `ListenUpdated` acknowledgement once the changes are applied.

:::callout{intent="note"}
Model changes (e.g., switching from `flux-general-en` to `flux-general-multi`) are not supported with `UpdateListen` — this is on our roadmap.
:::

For details, see the [UpdateListen documentation](/guides/self-hosted-deployments-3-voice-agent-update-listen).

## Related pages

- [Amazon SageMaker](./amazon-sagemaker-index.md)
- [Aura](./aura-index.md)
- [Changelog](../changelog.md)
- [Custom Vocabulary](./custom-vocabulary-index.md)
- [Deepgram's Docs](../index.md)
- [Deployment](./deployment-index.md)
- [Docker/Podman](./docker-podman-index.md)
- [Features](./features-index.md)
- [Flux TTS](./flux-tts-index.md)
- [Formatting](./formatting-index.md)

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