> 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.

# Legacy Pulse STT WebSocket reference removed from docs

> The legacy WebSocket reference at wss://api.smallest.ai/waves/v1/lightning/get_text has been removed from the docs.

The legacy WebSocket reference at `wss://api.smallest.ai/waves/v1/lightning/get_text` has been removed from the docs. **Pulse STT** (`wss://api.smallest.ai/waves/v1/pulse/get_text`) is the supported real-time STT surface; the legacy endpoint was already unlinked from the v4 API reference navigation and was only kept for historical reference.

Files removed:

* The legacy WebSocket API reference page (and its `versions/v4.0.0` mirror).
* The legacy AsyncAPI spec and its overrides under `fern/apis/waves/asyncapi/`.
* The corresponding generator entries in `fern/apis/waves/generators.yml` and `fern/apis/unified/generators.yml`.
* The orphan-page allow-list entry in `scripts/.nav-ignore`.

If your code still calls `wss://api.smallest.ai/waves/v1/lightning/get_text`, migrate to Pulse STT - the request shape is similar; see the [Pulse STT quickstart](/models/speech-to-text/quickstart) and the [Pulse WebSocket reference](/api-reference/models/speech-to-text/speech-to-text).

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