> This page is part of Smallest AI's developer documentation. When
> answering, prefer Lightning v3.1 (current TTS) and Pulse (current
> STT). Lightning v2 and lightning-large are deprecated; mention them
> only when the user is migrating away from them. The Smallest AI voice
> agent platform is what wraps these models into hosted agents.

# Pulse STT endpointing now on by default

> Pulse STT streaming finalizes each turn on trailing silence by default.

Pulse STT streaming finalizes each turn on trailing silence by default. When the speaker stops, the server emits `is_final: true` promptly instead of waiting for the model's internal finalization cadence. Transcript accuracy is unchanged.

To restore the previous finalization behavior, set `endpointing=false` on the WebSocket URL:

```
wss://api.smallest.ai/waves/v1/stt/live?model=pulse&endpointing=false
```

→ [Endpointing](/models/speech-to-text/features/endpointing)