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GPT-5 vs Mistral Medium 3
A detailed comparison of GPT-5 (OpenAI) and Mistral Medium 3 (Mistral) across pricing, performance, and features.
Pricing Comparison
| Metric | GPT-5 | Mistral Medium 3 | Difference |
|---|---|---|---|
| Input / 1M tokens | $1.25 | $0.40 | -68% |
| Output / 1M tokens | $10.00 | $2.00 | -80% |
| Context window | 128K | 128K | — |
| Max output | 16.384K | 16.384K | — |
Benchmark Comparison
| Benchmark | GPT-5 | Mistral Medium 3 |
|---|---|---|
| MMLU-Pro | 88.5% | 76% |
| HumanEval | 95% | 87% |
| GPQA | 73.5% | — |
Capabilities
| Capability | GPT-5 | Mistral Medium 3 |
|---|---|---|
| audio | ✓ | ✗ |
| code | ✓ | ✓ |
| reasoning | ✓ | ✗ |
| text | ✓ | ✓ |
| tool-use | ✓ | ✓ |
| vision | ✓ | ✓ |
GPT-5 Strengths
- ✓Strong all-around performance
- ✓Good price for flagship tier
- ✓Multimodal including audio
GPT-5 Weaknesses
- ✗128K context vs 200K+ for newer models
- ✗Codex variants better for pure coding
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: Mistral Medium 3 is the more affordable option at $0.4/$2 per 1M tokens.
Higher benchmarks: GPT-5 scores higher on average across available benchmarks (85.7% avg).
Choose Mistral Medium 3 if cost matters most. Choose GPT-5 if you need the best possible quality for complex tasks.