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Grok 3 Mini

Retired Aug 2026

xAI's lightweight reasoning model, released February 2025 and trained with large-scale reinforcement learning for chain-of-thought reasoning.

Context
131K tokens
Cutoff
Released
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Capabilities

What Grok 3 Mini accepts and can do, as published by xAI.

  • Text Accepts and generates natural-language text.
  • Reasoning Thinks before it answers, always on or as a switchable mode.
  • Function calling Connect to external tools, APIs, and systems.
  • Structured output Return responses in structured formats like JSON.

Common questions

What is Grok 3 Mini good for?

Reasoning on text-only tasks where a smaller model was acceptable: xAI built it as its lightweight reasoning model.

When is Grok 3 Mini not a good fit?

Any new work: it left xAI's models page in August 2026, so treat it as retired. Text only, with no built-in web search or code execution.

Can I self-host Grok 3 Mini?

No. xAI does not publish the weights; Grok 3 Mini is available only through hosted APIs.

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