> 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-3.5` (48 languages under one id, English included; recommended), `simba-3.2` (English) 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: from 21 November, both Simba 1.6 ids are served and billed as Simba 3.5

When the Simba 1.6 trainings stop serving on 21 November 2026, requests that still name `simba-english` or `simba-multilingual` go to Simba 3.5 in every language, English included.
The [2026-09-21 entry](/build/changelog/2026/9/21) named `simba-3.2` for English text on `simba-english`; Simba 3.5 is the model we recommend, and it is the model you hear when you test `simba-3.5` today.

- **Both ids bill as `simba-3.5`.** A request naming either id is billed at the `simba-3.5` rate on your plan; see [pricing](https://speechify.ai/pricing).
- **Nothing breaks.** Both ids keep answering on every API version that can still name them, and the audio changes.
- **To choose the model yourself**, set `model` to `simba-3.5` before the date, or `simba-3.2` if your text is English only, which keeps today's price.

The [migration guide](/build/migrating-off-simba-1-6) has the details.