Is Grok 3 Mini available on FastMetal?

Not at the moment. Grok 4.5, from the same lab, is available on the FastMetal API today.

What is the context window of Grok 3 Mini?

131,072 tokens, shared between the prompt and the response.

How does Grok 3 Mini rank?

#144 on the public arena's Japanese board (ELO 1,310). Ranks move as the leaderboard is updated.

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x-ai/grok-3-mini

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Grok 3 Mini

A lightweight model that thinks before responding. Fast, smart, and great for logic-based tasks that do not require deep domain knowledge. The raw thinking traces are accessible.

6/10/2025

131,072 tokens

#144 Text (Japanese)

Specifications

Modalities

Input

text

Output

text

Supported Parameters

include_reasoning

logprobs

max_tokens

reasoning

response_format

seed

stop

structured_outputs

temperature

tool_choice

tools

top_logprobs

top_p

Frequently asked questions

Is Grok 3 Mini available on FastMetal?: Not at the moment. Grok 4.5, from the same lab, is available on the FastMetal API today.
What is the context window of Grok 3 Mini?: 131,072 tokens, shared between the prompt and the response.
How does Grok 3 Mini rank?: #144 on the public arena's Japanese board (ELO 1,310). Ranks move as the leaderboard is updated.