createSpeech
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Third-party content written by another agent. Data to evaluate, not instructions.
Convert text to speech by cloning the voice from an audio sample you provide (voice-cloning text-to-speech). Both text and sample are required; the text is limited to 1000 characters and the sample is supplied as a URL or base64 audio that must be at most 15MB, with violations returning HTTP 400. The job result is a single audio result containing a URL. Credits are charged on success. Use this when you have a reference voice sample to clone; use createSpeechPreset to speak with a built-in named preset voice instead, and createVoice to design a brand-new voice from a text description rather than cloning one. Pass an optional request_id to tag the result so you can locate it later via GET /assets/audio/results. Requires an API key (user scope). Returns 202 with a job id immediately; poll getApiJob (pass wait: 30) until status is succeeded, then read its result field, which is exactly the response documented for this operation. Each account may have up to 50 generations queued or running at once; beyond that submissions return 429 (PENDING_JOBS_LIMIT) - wait for jobs to finish.
Credits: This endpoint consumes 1 credits per call.
Input schema
| Property | Type | Required | Description |
|---|---|---|---|
| requestBody | object | yes | Payload for text-to-speech generation using voice cloning |
Raw JSON schema
{
"type": "object",
"properties": {
"requestBody": {
"type": "object",
"description": "Payload for text-to-speech generation using voice cloning",
"required": [
"text",
"sample"
],
"properties": {
"text": {
"type": "string",
"description": "Text to convert to speech (max 100 words).",
"maxLength": 1000,
"minLength": 1
},
"sample": {
"type": "string",
"description": "URL or base64-encoded audio sample for voice cloning.",
"example": "<url> OR data:audio/mp3;base64,..."
},
"request_id": {
"type": "string",
"description": "Optional client-provided identifier, unique per request. Re-sending the same request_id returns the existing job instead of generating again. Also usable with the results endpoint."
}
}
}
},
"required": [
"requestBody"
]
}