Gemini 3.1 Pro vs Mistral Large 3: Benchmarks, Pricing & Capabilities Compared
TL;DR — Gemini 3.1 Pro wins for reasoning + long-context · Mistral Large 3 wins for general use.
Gemini 3.1 Pro Google
- Released
- 2026-02-19
- Context window
- 2M tokens
- Input price
- $2.50 / Mtok
- Output price
- $10.00 / Mtok
Key features
- 2x reasoning improvement
- ARC-AGI-2 score of 77.1%
- Enhanced multimodal understanding
Mistral Large 3 Mistral
- Released
- 2025-12-15
- Context window
- 256K tokens
- Input price
- $2.00 / Mtok
- Output price
- $6.00 / Mtok
Key features
- 128K context window
- Improved multilingual capabilities
- Enhanced function calling
Benchmark comparison
| Benchmark | Gemini 3.1 Pro | Mistral Large 3 |
|---|---|---|
| MATH | 89.4% ✓ | 82.1% |
Pricing comparison
| Metric | Gemini 3.1 Pro | Mistral Large 3 |
|---|---|---|
| Input ($/Mtok) | $2.50 | $2.00 |
| Output ($/Mtok) | $10.00 | $6.00 |
| Cached input ($/Mtok) | $0.25 | — |
| Cost per 1M-token roundtrip (1M in + 1M out) | $12.50 | $8.00 |
Context window & modalities
| Attribute | Gemini 3.1 Pro | Mistral Large 3 |
|---|---|---|
| Context window | 2M tokens | 256K tokens |
| Input modalities | text, image, audio, video, PDF | text, image |
| Output modalities | text | text |
| Knowledge cutoff | 2025-12 | 2025-07 |
Verdict by use case
Coding
Insufficient data
Basis: SWE-bench
No shared coding benchmark.
Reasoning
→ Gemini 3.1 Pro
Basis: MMLU-Pro
Gemini 3.1 Pro 93.8% vs Mistral Large 3 89.4% on MMLU-Pro.
Math
→ Gemini 3.1 Pro
Basis: MATH
Gemini 3.1 Pro 89.4% vs Mistral Large 3 82.1% on MATH.
Long context
→ Gemini 3.1 Pro
Basis: Context window
Gemini 3.1 Pro 2M tokens vs Mistral Large 3 256K tokens.
Cost
→ Mistral Large 3
Basis: Input $/Mtok
Gemini 3.1 Pro $2.5/Mtok vs Mistral Large 3 $2/Mtok input.
Changelog & releases
Gemini 3.1 Pro
Released 2026-02-19
Predecessor: google-gemini-3-pro
- 2x reasoning score on ARC-AGI-2 vs Gemini 3 Pro
- Context window expanded to 2M tokens
- Deep Think mode enabled by default on the Pro tier
- Lower latency on first-token despite larger context