> 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: regional hosts, and api.sws.speechify.com stops serving on 19 January 2027

## eu.api.speechify.ai and us.api.speechify.ai pin the region that runs synthesis

Two new hosts serve the text-to-speech and voice endpoints from one region: `eu.api.speechify.ai` from Europe and `us.api.speechify.ai` from US East.
`api.speechify.ai` is unchanged and stays the default.

- **Only the base URL changes.** The same API key, requests and responses work on every host.
- **A model with no capacity in the region still runs.** The request goes to the nearest pool that serves the model, usually US East.
- **Not data residency.** Your account, keys, voices, usage and logs stay in the United States on every host.
- **Rate and concurrency limits are counted per region.** Spend limits, project budgets and your credit balance count spend from every region.

No API version change is needed. See [Regions](/build/guides/get-started/regions).

## api.sws.speechify.com stops serving on 19 January 2027

`api.speechify.ai` is the only production host for the SpeechifyAI API.
The legacy host `api.sws.speechify.com` keeps answering until **Tuesday 19 January 2027 at 14:00 UTC**.
From then, every request to it gets a `308 Permanent Redirect` to the same path on `api.speechify.ai`.
This replaces the [19 February 2026 entry](/build/changelog/2026/2/19), which said the legacy host was not being deprecated.

- **Change your base URL to `https://api.speechify.ai`.** The same API keys, requests and responses work there.
- **Using an official SDK?** Upgrade it or remove the hard-coded base URL. Our SDKs have defaulted to `api.speechify.ai` since February 2026.
- **An integration still on the legacy host stops working on that day.** Most HTTP clients either do not follow a redirect on a `POST` or drop the `Authorization` header when the redirect goes to another host.
- **Responses from the legacy host carry `Deprecation` and `Sunset` headers** with the date, so an API gateway or SDK that reads them can warn you.

Workspaces that called the legacy host in the last 30 days get an email, and a reminder 30 days before the date.