Text-to-Speech (Bytes)

curl --request POST \ --url https://api.nineninesix.ai/tts/bytes \ --header 'Authorization: Bearer <token>' \ --header 'Content-Type: application/json' \ --data ' { "model_id": "gepard-1.0", "transcript": "Today is a wonderful day to build something people love!", "voice": { "mode": "id", "id": "a0e99841-438c-4a64-b679-ae501e7d6091" }, "output_format": { "container": "wav", "encoding": "pcm_s16le", "sample_rate": 22050 } } '

Authorizations

Authorization

string

header

required

Pass your API key as a Bearer token: Authorization: Bearer sk_996_....

Body

application/json

model_id

enum<string>

required

The TTS model. Currently gepard-1.0.

Available options:

gepard-1.0

transcript

string

required

The text to synthesize. Billed at 1 credit per character.

voice

object

required

Show child attributes

output_format

object

required

Output audio format. Each field is validated against a fixed set; anything outside these values returns 400 with no silent fallback.

Show child attributes

language

string

Optional language code (e.g. en).

Example:

"en"

Response

The audio file in the requested format. A wav container is returned as Content-Type: audio/wav (the playground renders an audio player); a raw container is returned as application/octet-stream (raw PCM has no header and won't play in a browser).

The response is of type file.