> 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: maximum-fidelity mp3, and a fix for the 22.05 kHz formats

`output_format` gains `mp3_22050_160` and `mp3_24000_160`, the highest-fidelity mp3 the format can carry: 160 kbps is the ceiling at these sample rates, so there is no higher mp3 to ask for. A request for `mp3_22050_192` or `mp3_24000_192` was always encoded at 160 kbps, and the response now reports the `mp3_*_160` it actually delivered rather than echoing the 192 back. Nothing about those two requests changes on the wire except the reported value, and no existing integration has to move.

Every `mp3_22050_*` format also plays at the right speed now. They were being encoded about 8% fast and close to a semitone high; if you compensated for that in your own pipeline, remove the correction. `mp3_24000_*`, the default for `audio_format: "mp3"`, was never affected.

Behind both: any sample-rate conversion we do is now a high-quality resample from the model's native 24 kHz rather than the encoder default, which keeps the audio flat to about 10.7 kHz at 22.05 kHz instead of rolling off from 10 kHz. That applies to `pcm_22050`, `pcm_44100`, `pcm_48000`, `pcm_8000` and `ulaw_8000` as well.

The two `mp3_*_160` formats are produced by the Simba 3 models; pairing one with a legacy Simba 1.6 model returns `400`.