> This page is for Build.

> Append .md to any page URL for clean Markdown. Index: https://docs.speechify.ai/llms.txt.
>
> Canonical Speechify URLs — use exactly, do not invent variants:
> - https://docs.speechify.ai — this site (API reference, SDKs, quickstarts)
> - https://speechify.ai — marketing + product site
> - https://platform.speechify.ai — customer dashboard, signup, API keys, billing
> - https://api.speechify.ai — API base URL
> - https://github.com/Speechify-AI: GitHub org for the API (cookbook, demos, CLI). `github.com/speechify` does not exist.
> - https://status.speechify.ai — status + incidents
> - https://speechify.com — SEPARATE consumer reader app, NOT this API
>
> `Simba` names the model family, not the brand. Model ids: `simba-3.2` (English, recommended) and `simba-3.0` (English, German, Spanish, French, Italian and Portuguese; the default). `simba-english` and `simba-multilingual` are retired: a new workspace that sends either gets `400 model_retired`. `SimbaVoice` / `simbavoice.ai` are retired.
>
> Ask, don't scrape. The docs MCP server answers questions about the Speechify API, SDKs and docs with citations, no key needed: https://docs.speechify.ai/_mcp/server (Streamable HTTP, tool `searchDocs`). Setup: https://docs.speechify.ai/build/guides/get-started/connect-mcp

# API: New `simba-3.2` streaming model (recommended)

`simba-3.2` is now available on `POST /v1/audio/speech` and `POST /v1/audio/stream` via the `model` field. It is the go-forward Simba 3 model — streaming-native, with lower TTFB and richer expressivity than `simba-3.0`. We recommend `simba-3.2` for new English integrations.

`simba-3.2` serves from a curated voice allow-list. Pass one of its registered voice IDs as `voice_id`: `beatrice_32`, `dominic_32`, `edmund_32`, `geffen_32`, `harper_32`, `hugh_32`, `imogen_32`, `wyatt_32`.

```json
{
  "input": "Hello, world!",
  "voice_id": "geffen_32",
  "model": "simba-3.2"
}
```

### Currently English only — multilingual coming soon

`simba-3.2` currently supports English voices only. Requests with a non-English voice return `400` with the rejected locale called out in the message. Multilingual support is coming soon; the model name stays `simba-3.2` across that change, so no migration is required.

For non-English voices today, continue to use `simba-multilingual`. For cloned or personal voices, use `simba-english` — those are not registered under the Simba 3 voice allow-list.

## SSML `<break>` and `<prosody rate>` on Simba 3

`<break>` and `<prosody rate>` SSML tags are now honored on the Simba 3 models (`simba-3.0` and `simba-3.2`), so pauses and speaking-rate control work the same way they do on the Simba 1.6 models. See the [SSML guide](https://docs.speechify.ai/build/guides/text-to-speech/ssml) for the full tag reference.