A pin line, and nothing sent

Write the model query value you would pin: grok-voice-3.0, because the page says the alias points there.

Write the sample voice and the sample turn detection beside the date you read the page.

Write 'ephemeral token on the client, API key only on the server.'

Do not paste a key. Do not open the socket.

Sources and go deeper

Speech to Speech, docs.x.ai vendor The page title is Speech to Speech. The body names the Grok Speech to Speech API and also calls the site SpaceXSI Docs. last checked 2026-10
Voice Overview, docs.x.ai vendor The page calls them SpaceXSI Voice APIs, powered by Grok, and separates Speech to Speech, Text to Speech, and Speech to Text. last checked 2026-10