Whether xAI: Grok 4 Fast supports tool calling cannot be decided from the name alone. Check model ID x-ai/grok-4-fast, provider xAI, catalog params, modality, a lightweight runtime probe, and the error body together.
Whether xAI: Grok 4 Fast supports tool calling cannot be decided from the name alone. Check model ID x-ai/grok-4-fast, provider xAI, catalog params, modality, a lightweight runtime probe, and the error body together.
Read-only check. Detection data burns after 5 minutes.
xAI: Grok 4 Fast tool calling should turn into an operator action: confirm sale tags, fill the capability matrix, change route, suggest a fallback model, or mark unsupported for now.
