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xAI

Fased supports xAI Grok models through an OpenAI-compatible API. In the Control UI, open Agent > Models and use the xAI card.
PropertyValue
Provider idxai
Auth envXAI_API_KEY
APIOpenAI-compatible
Base URLhttps://api.x.ai/v1
Setup methods:
  • xAI sign-in: browser OAuth for eligible xAI/Grok accounts.
  • xAI device code: remote-friendly sign-in for hosted or SSH sessions.
  • xAI API key: paste XAI_API_KEY or set it in the gateway environment.
Use device code when the gateway is on a VPS or you are connected over Tailscale/SSH and cannot rely on a localhost browser callback. Example default model: 
{
  agents: { defaults: { model: { primary: "xai/grok-4.3" } } },
}
Normal first-run surfaces show the current Chat API models:
  • xai/grok-4.3
  • xai/grok-4.20-multi-agent-0309
  • xai/grok-4.20-0309-reasoning
  • xai/grok-4.20-0309-non-reasoning
Older Grok 4, Grok 4 Fast, Grok 4.1 Fast, Grok 3, and Grok Code Fast models are not shown in normal setup because xAI is retiring those API models on May 15, 2026. Existing explicit configs are not removed automatically. Run fased models list --all --provider xai to see the full runtime catalog.