Create Voice

Create a cloned voice for the workspace from a 10-30 second audio sample, with verified consent from the speaker.

Cloning requires proof that the speaker agreed to it. Create a consent challenge with POST /v1/voices/consent-challenges, show the returned phrase to the speaker, record them reading it aloud, and send that recording here as consent_recording together with the challenge’s consent_challenge_id. Speechify transcribes the recording, checks it against the phrase it issued, checks that its speaker is the speaker in your sample, and keeps it as the consent record for the voice. The person consenting therefore has to be the person being cloned. A challenge is single use and short-lived, so record and submit in one sitting.

The clone belongs to the workspace rather than the member who created it, and access follows the caller’s workspace role and API-key scopes exactly as for any other voice: voices scopes to list it, audio scopes to synthesize with it, and the content-management permission plus a write scope on the key to delete it. Cloned voices are usable self-serve on simba-3.0 (and, on a workspace pinned before API version 2026-09-21, on the retired simba-english and simba-multilingual, which from 2026-11-21 are served by our current models and still take cloned voices). simba-3.2 also serves cloned voices.

Callers pinned before Speechify-Version: 2026-09-13 use the previous flow instead: no challenge, and a consent form field carrying the speaker’s name and email as a JSON string. That flow is switched off on 2026-09-23 for every API version: until then each create on it answers with Deprecation and Sunset headers naming the date, and from that date a create that sends consent and no consent_challenge_id returns 400 consent_verification_required.