Changelog

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.

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

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.