Model Comparison

Mistral Small 3.1 24B Instruct vs o1-proWhich is better in 2026?

o1-pro significantly outperforms across most benchmarks.

Verdict: Mistral Small 3.1 24B Instruct vs o1-pro — which is better?

Mistral Small 3.1 24B Instruct (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.

Mistral Small 3.1 24B Instruct outperforms in 0 benchmarks, while o1-pro is better at 1 benchmark (GPQA). o1-pro significantly outperforms across most benchmarks.

Choose Mistral Small 3.1 24B Instruct if…

  • you want the most recent training data — it shipped Mar 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 1 of 1 shared benchmarks
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Performance Benchmarks

Comparative analysis across standard metrics

1 benchmarks

Mistral Small 3.1 24B Instruct outperforms in 0 benchmarks, while o1-pro is better at 1 benchmark (GPQA).

o1-pro significantly outperforms across most benchmarks.

Tue Jun 09 2026 • llm-stats.com

Arena Performance

Human preference votes

Input Capabilities

Supported data types and modalities

Both Mistral Small 3.1 24B Instruct and o1-pro support multimodal inputs.

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

Mistral Small 3.1 24B Instruct

Text
Images
Audio
Video

o1-pro

Text
Images
Audio
Video

License

Usage and distribution terms

Mistral Small 3.1 24B Instruct 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.

Mistral Small 3.1 24B Instruct

Apache 2.0

Open weights

o1-pro

Proprietary

Closed source

Release Timeline

When each model was launched

Mistral Small 3.1 24B Instruct was released on 2025-03-17, while o1-pro was released on 2024-12-17.

Mistral Small 3.1 24B Instruct is 3 months newer than o1-pro.

Mistral Small 3.1 24B Instruct

Mar 17, 2025

1.2 years ago

3mo newer
o1-pro

Dec 17, 2024

1.5 years ago

Knowledge Cutoff

When training data ends

o1-pro has a documented knowledge cutoff of 2023-09-30, while Mistral Small 3.1 24B Instruct'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 Mistral Small 3.1 24B Instruct's cutoff date.

Mistral Small 3.1 24B Instruct

—

o1-pro

Sep 2023

Outputs Comparison

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Key Takeaways

Mistral AI
Has open weights
OpenAI
Higher GPQA score (79.0% vs 46.0%)

Detailed Comparison

AI Model Comparison Table
Feature
Mistral AI
Mistral Small 3.1 24B Instruct
OpenAI
o1-pro

FAQ

Common questions about Mistral Small 3.1 24B Instruct vs o1-pro.

Which is better, Mistral Small 3.1 24B Instruct or o1-pro?

o1-pro significantly outperforms across most benchmarks. Mistral Small 3.1 24B Instruct 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 Mistral Small 3.1 24B Instruct compare to o1-pro in benchmarks?

Mistral Small 3.1 24B Instruct scores HumanEval: 88.4%, MMLU: 80.6%, TriviaQA: 80.5%, MBPP: 74.7%, MATH: 69.3%. o1-pro scores AIME 2024: 86.0%, GPQA: 79.0%.

What are the main differences between Mistral Small 3.1 24B Instruct and o1-pro?

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

Who makes Mistral Small 3.1 24B Instruct and o1-pro?

Mistral Small 3.1 24B Instruct is developed by Mistral AI and o1-pro is developed by OpenAI.

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