Finalize Control | Smallest AI Docs

Real-Time

Pulse STT finalizes the live transcript on trailing silence, on word count, and whenever you send a finalize message. finalize_on_words and max_words are the word-count parameters. For how all finalization triggers fit together and the recommended setup per orchestration, see Finalization and Endpointing. These params are meant for ?model=pulse. Pulse 2.0 uses built-in end-of-turn detection and ignores both by default - don’t send them. If you do, they still take effect and compete with end-of-turn detection: a low max_words splits turns into short fragments.

Parameters

Parameter	Type	Default	Description
`finalize_on_words`	`"true"` \| `"false"`	`"true"`	Word-count-based finalization.
`max_words`	integer	Unset	Word count at which the pending transcript is finalized.

Both parameters are WebSocket-only - they don’t apply to the pre-recorded HTTP endpoint, which always returns one final transcript per request.

Inverse Text Normalization (ITN) - finalize_on_words is most useful in combination with ITN.
End-of-Utterance Timeout - controls automatic finalization timing when finalize_on_words stays true.
Pulse STT WebSocket reference - full parameter reference and the finalize / close_stream control messages.