Grok 3 Mini
Retired Aug 2026xAI's lightweight reasoning model, released February 2025 and trained with large-scale reinforcement learning for chain-of-thought reasoning.
- Context
- 131K tokens
- Cutoff
- Released
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.
More from xAI
-
Grok 4.7
500K context · cutoff May 2026
From $2.00 / $6.00 /1M in / out at the cheapest provider
-
Grok 4.5
500K context · cutoff Feb 2026
From $2.00 / $6.00 /1M in / out at the cheapest provider
-
Grok 4.6
500K context · cutoff Jan 2026
From $2.00 / $6.00 /1M in / out at the cheapest provider
-
Grok 4.1 Fast (Non-Reasoning)
2M context · cutoff Oct 2024
From $0.20 / $0.50 /1M in / out at the cheapest provider
-
Grok 4.1 Fast (Reasoning)
2M context · cutoff Oct 2024
From $0.20 / $0.50 /1M in / out at the cheapest provider
-
Grok 4
256K context · cutoff Oct 2024
From $3.00 / $15.00 /1M in / out at the cheapest provider
-
Grok 3
131K context · cutoff Oct 2024
-
Grok 4 Fast (Non-Reasoning)
2M context