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Gemini 3.1 Pro vs Mistral Medium 3
A detailed comparison of Gemini 3.1 Pro (Google) and Mistral Medium 3 (Mistral) across pricing, performance, and features.
Pricing Comparison
| Metric | Gemini 3.1 Pro | Mistral Medium 3 | Difference |
|---|---|---|---|
| Input / 1M tokens | $2.00 | $0.40 | -80% |
| Output / 1M tokens | $12.00 | $2.00 | -83% |
| Context window | 1M | 128K | — |
| Max output | 64K | 16.384K | — |
Benchmark Comparison
| Benchmark | Gemini 3.1 Pro | Mistral Medium 3 |
|---|---|---|
| MMLU-Pro | 91% | 76% |
| HumanEval | 95% | 87% |
| GPQA | 94.3% | — |
Capabilities
| Capability | Gemini 3.1 Pro | Mistral Medium 3 |
|---|---|---|
| audio | ✓ | ✗ |
| code | ✓ | ✓ |
| reasoning | ✓ | ✗ |
| text | ✓ | ✓ |
| tool-use | ✓ | ✓ |
| vision | ✓ | ✓ |
Gemini 3.1 Pro Strengths
- ✓#1 on 12 of 18 tracked benchmarks
- ✓94.3% GPQA Diamond — highest of any model
- ✓Same price as Gemini 3 Pro (free upgrade)
- ✓1M context with configurable thinking levels
Gemini 3.1 Pro Weaknesses
- ✗Still in preview
- ✗Context-tiered pricing ($4/$18 above 200K)
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: Gemini 3.1 Pro scores higher on average across available benchmarks (93.4% avg).
Larger context: Gemini 3.1 Pro supports 1M tokens.
Choose Mistral Medium 3 if cost matters most. Choose Gemini 3.1 Pro if you need the best possible quality for complex tasks.