Skip to main content
POST
Voice Changer (Bytes)

Authorizations

Authorization
string
header
default:$CARTESIA_API_KEY
required

Cartesia API key (sk_car_...). Get one at play.cartesia.ai/keys.

Headers

Cartesia-Version
enum<string>
default:2026-03-01
required

API version header.

Available options:
2026-03-01
Example:

"2026-03-01"

Body

multipart/form-data
clip
file

Supported audio formats: flac, mp3, mpeg, mpga, oga, ogg, wav, webm

voice[id]
string
output_format[container]
enum<string>
Available options:
raw,
wav,
mp3
output_format[sample_rate]
enum<integer>
Available options:
8000,
16000,
22050,
24000,
44100,
48000
output_format[encoding]
enum<string> | null

Required for raw and wav containers.

Available options:
pcm_f32le,
pcm_s16le,
pcm_mulaw,
pcm_alaw
output_format[bit_rate]
integer | null

Required for mp3 containers.

Response

200 - audio/*

Audio bytes

The response is of type file.