Model Comparison

Ministral 3 (8B Reasoning 2512) vs o1-proWhich is better in 2026?

o1-pro has a slight edge in benchmark performance.

Verdict: Ministral 3 (8B Reasoning 2512) vs o1-pro — which is better?

Ministral 3 (8B Reasoning 2512) (by Mistral AI) and o1-pro (by OpenAI) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.

Ministral 3 (8B Reasoning 2512) outperforms in 0 benchmarks, while o1-pro is better at 1 benchmark (GPQA). o1-pro has a slight edge in benchmark performance.

Choose Ministral 3 (8B Reasoning 2512) if…

  • you want the most recent training data — it shipped Dec 2025
  • you need open weights you can self-host or fine-tune

Choose o1-pro if…

  • you want the strongest raw capability — it leads on 2 of 2 shared benchmarks

Performance Benchmarks

Comparative analysis across standard metrics

2 benchmarks

Ministral 3 (8B Reasoning 2512) outperforms in 0 benchmarks, while o1-pro is better at 1 benchmark (GPQA).

o1-pro has a slight edge in benchmark performance.

Mon Aug 03 2026 • llm-stats.com

Arena Performance

Human preference votes

Context Window

Maximum input and output token capacity

Only Ministral 3 (8B Reasoning 2512) specifies input context (262,100 tokens). Only Ministral 3 (8B Reasoning 2512) specifies output context (262,100 tokens).

Mistral AI
Ministral 3 (8B Reasoning 2512)
Input262,100 tokens
Output262,100 tokens
OpenAI
o1-pro
Input- tokens
Output- tokens
Mon Aug 03 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Ministral 3 (8B Reasoning 2512) and o1-pro support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

Ministral 3 (8B Reasoning 2512)

Text
Images
Audio
Video

o1-pro

Text
Images
Audio
Video

License

Usage and distribution terms

Ministral 3 (8B Reasoning 2512) is licensed under Apache 2.0, while o1-pro uses a proprietary license.

License differences may affect how you can use these models in commercial or open-source projects.

Ministral 3 (8B Reasoning 2512)

Apache 2.0

Open weights

o1-pro

Proprietary

Closed source

Release Timeline

When each model was launched

Ministral 3 (8B Reasoning 2512) was released on 2025-12-04, while o1-pro was released on 2024-12-17.

Ministral 3 (8B Reasoning 2512) is 12 months newer than o1-pro.

Ministral 3 (8B Reasoning 2512)

Dec 4, 2025

8 months ago

11mo newer
o1-pro

Dec 17, 2024

1.6 years ago

Knowledge Cutoff

When training data ends

o1-pro has a documented knowledge cutoff of 2023-09-30, while Ministral 3 (8B Reasoning 2512)'s cutoff date is not specified.

We can confirm o1-pro's training data extends to 2023-09-30, but cannot make a direct comparison without Ministral 3 (8B Reasoning 2512)'s cutoff date.

Ministral 3 (8B Reasoning 2512)

—

o1-pro

Sep 2023

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

Mistral AI
Larger context window (262,100 tokens)
Has open weights
OpenAI
Higher GPQA score (79.0% vs 66.8%)

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Ministral 3 (8B Reasoning 2512) and o1-pro side-by-side, then vote on the output you prefer.

Ministral 3 (8B Reasoning 2512)
✓ Preferred
o1-pro
Open in Playground
AI Model Comparison Table
Feature
Mistral AI
Ministral 3 (8B Reasoning 2512)
OpenAI
o1-pro

FAQ

Common questions about Ministral 3 (8B Reasoning 2512) vs o1-pro.

Which is better, Ministral 3 (8B Reasoning 2512) or o1-pro?

o1-pro has a slight edge in benchmark performance. Ministral 3 (8B Reasoning 2512) is made by Mistral AI and o1-pro is made by OpenAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Ministral 3 (8B Reasoning 2512) compare to o1-pro in benchmarks?

Ministral 3 (8B Reasoning 2512) scores AIME 2024: 86.0%, AIME 2025: 78.7%, GPQA: 66.8%, LiveCodeBench: 61.6%. o1-pro scores AIME 2024: 86.0%, GPQA: 79.0%.

What are the context window sizes for Ministral 3 (8B Reasoning 2512) and o1-pro?

Ministral 3 (8B Reasoning 2512) supports 262K tokens and o1-pro supports an unknown number of tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Ministral 3 (8B Reasoning 2512) and o1-pro?

Key differences include licensing (Apache 2.0 vs Proprietary). See the full comparison above for benchmark-by-benchmark results.

Who makes Ministral 3 (8B Reasoning 2512) and o1-pro?

Ministral 3 (8B Reasoning 2512) is developed by Mistral AI and o1-pro is developed by OpenAI.

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