Model Comparison

Magistral Medium vs o3-proWhich is better in 2026?

Comparing Magistral Medium and o3-pro across benchmarks, pricing, and capabilities.

Verdict: Magistral Medium vs o3-pro — which is better?

Magistral Medium (by Mistral AI) and o3-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.

Choose Magistral Medium if…

  • you need open weights you can self-host or fine-tune

Choose o3-pro if…

  • you want predictable pricing at $20.00/M input and $80.00/M output

Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

Magistral Medium and o3-prodon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Arena Performance

Human preference votes

Context Window

Maximum input and output token capacity

Only o3-pro specifies input context (200,000 tokens). Only o3-pro specifies output context (100,000 tokens).

Mistral AI
Magistral Medium
Input- tokens
Output- tokens
OpenAI
o3-pro
Input200,000 tokens
Output100,000 tokens
Wed Jul 08 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Magistral Medium and o3-pro support multimodal inputs.

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

Magistral Medium

Text
Images
Audio
Video

o3-pro

Text
Images
Audio
Video

License

Usage and distribution terms

Magistral Medium is licensed under Apache 2.0, while o3-pro uses a proprietary license.

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

Magistral Medium

Apache 2.0

Open weights

o3-pro

Proprietary

Closed source

Release Timeline

When each model was launched

Both models were released on 2025-06-10.

They likely represent similar generations of model development.

Magistral Medium

Jun 10, 2025

1.1 years ago

o3-pro

Jun 10, 2025

1.1 years ago

Knowledge Cutoff

When training data ends

Magistral Medium has a knowledge cutoff of 2025-06-01, while o3-pro has a cutoff of 2024-05-31.

Magistral Medium has more recent training data (up to 2025-06-01), making it potentially better informed about events through that date compared to o3-pro (2024-05-31).

Magistral Medium

Jun 2025

1.1 yr newer
o3-pro

May 2024

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

Mistral AI
Has open weights
OpenAI
Larger context window (200,000 tokens)

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Magistral Medium and o3-pro side-by-side, then vote on the output you prefer.

Magistral Medium
✓ Preferred
o3-pro
Open in Playground
AI Model Comparison Table
Feature
Mistral AI
Magistral Medium
OpenAI
o3-pro

FAQ

Common questions about Magistral Medium vs o3-pro.

Which is better, Magistral Medium or o3-pro?

Magistral Medium (Mistral AI) and o3-pro (OpenAI) each have strengths in different areas. Compare their benchmark scores, pricing, context windows, and capabilities above to determine which fits your needs.

How does Magistral Medium compare to o3-pro in benchmarks?

Magistral Medium scores AIME 2024: 73.6%, GPQA: 70.8%, AIME 2025: 64.9%, LiveCodeBench: 50.3%, Aider-Polyglot: 47.1%.

What are the context window sizes for Magistral Medium and o3-pro?

Magistral Medium supports an unknown number of tokens and o3-pro supports 200K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Magistral Medium and o3-pro?

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

Who makes Magistral Medium and o3-pro?

Magistral Medium is developed by Mistral AI and o3-pro is developed by OpenAI.

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