Magistral Medium vs o3
o3 significantly outperforms across most benchmarks.
Mistral AI · OpenAI · Updated for 2026
Which is better?
Magistral Medium outperforms in 0 benchmarks, while o3 is better at 5 benchmarks (Aider-Polyglot, AIME 2024, AIME 2025, GPQA, Humanity's Last Exam). o3 significantly outperforms across most benchmarks.
Based on current benchmark, pricing, and model metadata for 2026.
Choose Magistral Medium
- you want the most recent training data — it shipped Jun 2025
- you need open weights you can self-host or fine-tune
Choose o3
- you want the strongest raw capability — it leads on 5 of 5 shared benchmarks
At a glance
The differences that matter most.
Performance Benchmarks
Comparative analysis across standard metrics
Magistral Medium outperforms in 0 benchmarks, while o3 is better at 5 benchmarks (Aider-Polyglot, AIME 2024, AIME 2025, GPQA, Humanity's Last Exam).
o3 significantly outperforms across most benchmarks.
Arena Performance
Playground indexes and blind preference scores
Context Window
Maximum input and output token capacity
Only o3 specifies input context (200,000 tokens). Only o3 specifies output context (100,000 tokens).
Input Capabilities
Supported data types and modalities
Both Magistral Medium and o3 support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
Magistral Medium
o3
License
Usage and distribution terms
Magistral Medium is licensed under Apache 2.0, while o3 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
Magistral Medium was released on 2025-06-10, while o3 was released on 2025-04-16.
Magistral Medium is 2 months newer than o3.
Jun 10, 2025
1.2 years ago
1mo newerApr 16, 2025
1.4 years ago
Knowledge Cutoff
When training data ends
Magistral Medium has a knowledge cutoff of 2025-06-01, while o3 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 (2024-05-31).
Jun 2025
1.1 yr newerMay 2024
Outputs Comparison
Judge for yourself.
Run your own prompts against Magistral Medium and o3 side-by-side, then vote on the output you prefer.
FAQ
Common questions about Magistral Medium vs o3.