Is o3 available on FastMetal?

Not at the moment. GPT-5.6 Sol, from the same lab, is available on the FastMetal API today.

What is the context window of o3?

200,000 tokens, shared between the prompt and the response.

#155 on the public arena's Japanese board (ELO 1,297). Ranks move as the leaderboard is updated.

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openai/o3

Not Available

o3

o3 is a well-rounded and powerful model across domains. It sets a new standard for math, science, coding, and visual reasoning tasks. It also excels at technical writing and instruction-following. Use it to think through multi-step problems that involve analysis across text, code, and images.

4/16/2025

200,000 tokens

#64 Vision (Overall)

Specifications

Modalities

Input

image

text

file

Output

text

Supported Parameters

include_reasoning

max_tokens

reasoning

response_format

seed

structured_outputs

tool_choice

tools

Max Output Tokens

100,000

Frequently asked questions

Is o3 available on FastMetal?: Not at the moment. GPT-5.6 Sol, from the same lab, is available on the FastMetal API today.
What is the context window of o3?: 200,000 tokens, shared between the prompt and the response.
How does o3 rank?: #155 on the public arena's Japanese board (ELO 1,297). Ranks move as the leaderboard is updated.