GET

/v1/schemas/elevenlabs/audio/v1/speech-to-speech/{voice_id}

kind inputactivity audiohash 57ea7f8c…extracted Jul 6, 2026version currentsource upstream spec ↗
fieldrecorded source
schemaSource linked above.
Source trace
56793d52b38081086c43910ec1916ff4bb286322250511820c239e4f46831396
{
  "fetchedAt": 1783328734,
  "extractorVersion": "1",
  "verifiedAt": null
}

Request body

6 properties · 1 required · 0 $defs
propertytypedescriptionconstraints
audio*stringThe audio file which holds the content and emotion that will control the generated speech.format: binary
model_idstringIdentifier of the model that will be used, you can query them using GET /v1/models. The model needs to have support for speech to speech, you can check this using the can_do_voice_conversion property.default: "eleven_english_sts_v2"
voice_settingsstringVoice settings overriding stored settings for the given voice. They are applied only on the given request. Needs to be send as a JSON encoded string.nullable
seedintegerIf specified, our system will make a best effort to sample deterministically, such that repeated requests with the same seed and parameters should return the same result. Determinism is not guaranteed. Must be integer between 0 and 4294967295.nullable
remove_background_noisebooleanIf set, will remove the background noise from your audio input using our audio isolation model. Only applies to Voice Changer.default: false
file_formatenumThe format of input audio. Options are 'pcm_s16le_16' or 'other' For `pcm_s16le_16`, the input audio must be 16-bit PCM at a 16kHz sample rate, single channel (mono), and little-endian byte order. Latency will be lower than with passing an encoded waveform.pcm_s16le_16 | other · nullable

Validate a payload

before you spend tokens
shell
$ curl -X POST https://modelschemas.com/v1/validate \
    -d '{"provider":"elevenlabs","endpointId":"v1/speech-to-speech/{voice_id}","payload":{…}}'
→ {"valid": false, "errors": [{"path": "#", "keyword": "required", …}]}