GET

/v1/schemas/fal/audio/xai/grok-voice?kind=output

Accept:

kind outputactivity audiohash 14079612…extracted Sep 17, 2026version currentsource upstream spec ↗

field	recorded source
schema	Source linked above. upstream-spec Source trace `2e9741c395c5f42558acab60f1b9e2b9e31c41c00150f70fdef94f95cfac9acf` { "fetchedAt": 1789621307, "extractorVersion": "1", "verifiedAt": null }

Response body

3 properties · 2 required · 1 $defs

property	type	description	constraints
audio*	File	The Grok agent's spoken response (WAV, 24 kHz mono).
duration*	number	Duration of the generated audio in seconds.
text	string	Transcript of the agent's spoken response, when Grok provides one (empty string otherwise).	default: ""

Types

1 $defs

Fileobject

file_name	string	The name of the file. It will be auto-generated if not provided.	nullable
content_type	string	The mime type of the file.	nullable
url*	string	The URL where the file can be downloaded from.
file_size	integer	The size of the file in bytes.	nullable

Validate a payload

before you spend tokens

shell

$ curl -X POST https://modelschemas.com/v1/validate \
    -d '{"provider":"fal","endpointId":"xai/grok-voice","payload":{…}}'
→ {"valid": false, "errors": [{"path": "#", "keyword": "required", …}]}