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o3 vs Mistral Medium 3
A detailed comparison of o3 (OpenAI) and Mistral Medium 3 (Mistral) across pricing, performance, and features.
Pricing Comparison
| Metric | o3 | Mistral Medium 3 | Difference |
|---|---|---|---|
| Input / 1M tokens | $0.40 | $0.40 | — |
| Output / 1M tokens | $1.60 | $2.00 | +25% |
| Context window | 200K | 128K | — |
| Max output | 100K | 16.384K | — |
Benchmark Comparison
| Benchmark | o3 | Mistral Medium 3 |
|---|---|---|
| MMLU-Pro | 87% | 76% |
| HumanEval | 94.5% | 87% |
| GPQA | 79.2% | — |
Capabilities
| Capability | o3 | Mistral Medium 3 |
|---|---|---|
| code | ✓ | ✓ |
| reasoning | ✓ | ✗ |
| text | ✓ | ✓ |
| tool-use | ✓ | ✓ |
| vision | ✓ | ✓ |
o3 Strengths
- ✓Recently repriced — now very cheap
- ✓Excellent logical reasoning
- ✓200K context window
o3 Weaknesses
- ✗Slower due to reasoning overhead
- ✗Overkill for simple tasks
Mistral Medium 3 Strengths
- ✓Very affordable for mid-tier quality
- ✓Good multilingual performance
Mistral Medium 3 Weaknesses
- ✗Lags behind on reasoning benchmarks
- ✗Smaller community and tooling
Quick Verdict
Best value: o3 is the more affordable option at $0.4/$1.6 per 1M tokens.
Higher benchmarks: o3 scores higher on average across available benchmarks (86.9% avg).
Larger context: o3 supports 200K tokens.
Choose o3 if cost matters most. Choose Mistral Medium 3 if you need the best possible quality for complex tasks.