Model Comparison
Mistral Small 3 24B Base vs o3-proWhich is better in 2026?
Comparing Mistral Small 3 24B Base and o3-pro across benchmarks, pricing, and capabilities.
Verdict: Mistral Small 3 24B Base vs o3-pro — which is better?
Mistral Small 3 24B Base (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 Mistral Small 3 24B Base if…
- you need open weights you can self-host or fine-tune
Choose o3-pro if…
- you want the most recent training data — it shipped Jun 2025
Performance Benchmarks
Comparative analysis across standard metrics
Mistral Small 3 24B Base 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).
Input Capabilities
Supported data types and modalities
Both Mistral Small 3 24B Base and o3-pro support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
Mistral Small 3 24B Base
o3-pro
License
Usage and distribution terms
Mistral Small 3 24B Base 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.
Apache 2.0
Open weights
Proprietary
Closed source
Release Timeline
When each model was launched
Mistral Small 3 24B Base was released on 2025-01-30, while o3-pro was released on 2025-06-10.
o3-pro is 4 months newer than Mistral Small 3 24B Base.
Jan 30, 2025
1.5 years ago
Jun 10, 2025
1.2 years ago
4mo newerKnowledge Cutoff
When training data ends
Mistral Small 3 24B Base has a knowledge cutoff of 2023-10-01, while o3-pro has a cutoff of 2024-05-31.
o3-pro has more recent training data (up to 2024-05-31), making it potentially better informed about events through that date compared to Mistral Small 3 24B Base (2023-10-01).
Oct 2023
May 2024
7 mo newerOutputs Comparison
Key Takeaways
Mistral Small 3 24B Base
View detailsMistral AI
o3-pro
View detailsOpenAI
Detailed Comparison
Interactive Arena
Judge for yourself.
Run your own prompts against Mistral Small 3 24B Base and o3-pro side-by-side, then vote on the output you prefer.
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FAQ
Common questions about Mistral Small 3 24B Base vs o3-pro.