> 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 documentation cleanup, multi-indic restored, redact language scope

> Small STT docs corrections surfaced by customer reports and post-#251 audit.

Small STT docs corrections surfaced by customer reports and post-#251 audit.

**`multi-indic` restored on pre-recorded.** Documented as a pre-recorded aggregator (India region only) covering `en`, `hi`, `gu`, `mr`, `bn`, `or`. Streaming still uses `north_indic` for the same coverage; `multi-indic` is not supported on the streaming endpoint. Aligns the docs with what the platform actually accepts on `POST /waves/v1/stt/`.

**`redact_pii` / `redact_pci` language scope.** Param descriptions now note that redaction is currently effective only on `en` and `hi`. Setting these params `true` on other languages is accepted at the API layer but does not redact. Applies to both the streaming WebSocket (`stt-live-ws-overrides.yml`) and the pre-recorded REST endpoint (`stt-openapi.yaml`).

Also picks up small drift/miswritten-copy fixes across STT non-model-card pages: corrected Pulse TTFT number to \~150 ms (was 64 ms / "Sub-100 ms"), removed a stale `emotions` mention in the diarization enrichment list, and fixed a webhook sample payload that still showed `gender` + `emotions`.

→ [Pulse STT overview](/models/speech-to-text/overview)

> Small STT docs corrections surfaced by customer reports and post-#251 audit.