Model Comparison
Mistral Large 2 vs o3Which is better in 2026?
Comparing Mistral Large 2 and o3 across benchmarks, pricing, and capabilities.
Verdict: Mistral Large 2 vs o3 — which is better?
Mistral Large 2 (by Mistral AI) and o3 (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.
On price, Mistral Large 2 is roughly 1.2x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
o3 also accepts a larger context window (200,000 input tokens), making it the stronger choice for long documents and large codebases.
Choose Mistral Large 2 if…
- cost matters — it's about 1.2x cheaper per token
- you need open weights you can self-host or fine-tune
Choose o3 if…
- you process long inputs — it offers a 200,000 token context window
- you want the most recent training data — it shipped Apr 2025
Performance Benchmarks
Comparative analysis across standard metrics
Mistral Large 2 and o3don't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.
Arena Performance
Human preference votes
Pricing Analysis
Price comparison per million tokens
For input processing, Mistral Large 2 ($2.00/1M tokens) costs the same as o3 ($2.00/1M tokens).
For output processing, Mistral Large 2 ($6.00/1M tokens) is 1.3x cheaper than o3 ($8.00/1M tokens).
In conclusion, o3 is more expensive than Mistral Large 2.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
o3 accepts 200,000 input tokens compared to Mistral Large 2's 128,000 tokens. Mistral Large 2 can generate longer responses up to 128,000 tokens, while o3 is limited to 100,000 tokens.
Input Capabilities
Supported data types and modalities
o3 supports multimodal inputs, whereas Mistral Large 2 does not.
o3 can handle both text and other forms of data like images, making it suitable for multimodal applications.
Mistral Large 2
o3
License
Usage and distribution terms
Mistral Large 2 is licensed under Mistral Research License, while o3 uses a proprietary license.
License differences may affect how you can use these models in commercial or open-source projects.
Mistral Research License
Open weights
Proprietary
Closed source
Release Timeline
When each model was launched
Mistral Large 2 was released on 2024-07-24, while o3 was released on 2025-04-16.
o3 is 9 months newer than Mistral Large 2.
Jul 24, 2024
2.0 years ago
Apr 16, 2025
1.3 years ago
8mo newerKnowledge Cutoff
When training data ends
o3 has a documented knowledge cutoff of 2024-05-31, while Mistral Large 2's cutoff date is not specified.
We can confirm o3's training data extends to 2024-05-31, but cannot make a direct comparison without Mistral Large 2's cutoff date.
—
May 2024
Provider Availability
Mistral Large 2 is available from Google, Mistral AI. o3 is available from OpenAI.
Mistral Large 2
o3
Outputs Comparison
Key Takeaways
Mistral Large 2
View detailsMistral AI
o3
View detailsOpenAI
Mistral Large 2o3Detailed Comparison
Interactive Arena
Judge for yourself.
Run your own prompts against Mistral Large 2 and o3 side-by-side, then vote on the output you prefer.
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FAQ
Common questions about Mistral Large 2 vs o3.