o3-mini

Benchmarks, price, context and versions

Direct answer: o3-mini is a model from OpenAI. 77% on GPQA Diamond, per Epoch AI.

✓ Good for

Not enough data in the open sources this section uses to build this block.

✕ Not the best for

calculation and problems with an exact answer (#94 of 186 on OTIS Mock AIME)
the ceiling of reasoning on research-level math (#77 of 86 on FrontierMath (tiers 1 to 3))
answering short facts with little invention (#79 of 87 on SimpleQA Verified)

This block follows a rule of this section, using source data: if the model is in the top 25% of the metric, the item goes under "Good for"; if it is in the bottom half, it goes under "Not the best for". The middle band appears in neither. Price and context use OpenRouter; scores use Epoch AI or OpenRouter Benchmarks, in the latest version we checked.

Benchmarks

GPQA Diamond

?what it is

77%

highest score on this metric 96.4%

96º / 198 · Epoch AI, latest version we checked

OTIS Mock AIME

76.9%

highest score on this metric 100%

94º / 186 · Epoch AI, latest version we checked

FrontierMath (tiers 1 to 3)

18.6%

highest score on this metric 95.1%

77º / 86 · Epoch AI, latest version we checked

SimpleQA Verified

15.3%

highest score on this metric 94%

79º / 87 · Epoch AI, latest version we checked

Key specs

Lab: OpenAI
Origin: the US
Family: mini provisional data
Weights?: closed
License: no data
Input US$/1M?: no data
Output US$/1M: no data
Context?: no data
Parameters: no data
Input: no data
OpenRouter usage?: no data
Downloads (30 days)?: no data
Use cases provisional data: Text
Dates in sources: 2025, published, per Epoch AI

Version history

2026 OpenAI: GPT-5.4 Mini OpenRouter, listed on OpenRouter
2026 OpenAI: GPT Audio Mini OpenRouter, listed on OpenRouter
2025 OpenAI: GPT-5.1-Codex-Mini OpenRouter, listed on OpenRouter
2025 OpenAI: GPT-5 Image Mini OpenRouter, listed on OpenRouter
2025 OpenAI: GPT-5 Mini OpenRouter, listed on OpenRouter
2025 OpenAI: GPT-4.1 Mini OpenRouter, listed on OpenRouter
2024 OpenAI: GPT-4o-mini (2024-07-18) OpenRouter, listed on OpenRouter
2024 OpenAI: GPT-4o-mini OpenRouter, listed on OpenRouter

Dates come from the sources: OpenRouter listing or Hugging Face repo creation, which may differ from the official launch.

FAQ

What is o3-mini?

o3-mini is a model from OpenAI, with closed weights, used for text.

How much does o3-mini cost?

No data in open sources.

What is the context window of o3-mini?

No data in open sources.

Is o3-mini open source?

No. It is available through API only.

What is o3-mini's GPQA Diamond score?

77% on GPQA Diamond, per Epoch AI.

Is o3-mini good for coding?

No data: there is no SWE-bench Verified measurement for it in open sources.

Who made o3-mini?

It was made by OpenAI, a lab from the US.

provisional data Questions under review: Semrush had no API balance during collection. Answers use source data only.

Models from OpenAI

See lab

Sources

Epoch AI, CC BY 4.0, latest version we checked.

Dates come from the sources: OpenRouter listing or Hugging Face repo creation, which may differ from the official launch. Family and version were grouped by rule from the name.