Gemini 3.1 Pro vs Mistral Large 3
Both are Flagship-tier models, from Google and Mistral AI respectively. Mistral Large 3 is the cheaper choice overall at a 4:1 input:output ratio.
Which is cheaper
- Input price: Mistral Large 3 is cheaper ($0.50 vs $2.00).
- Output price: Mistral Large 3 is cheaper ($1.50 vs $12.00).
- Blended, 4:1 input:output ratio: Mistral Large 3 is 82.5% cheaper ($0.70 vs $4.00 per weighted 1M tokens).
Side by side
| Spec | Gemini 3.1 Pro | Mistral Large 3 |
|---|---|---|
| Provider | Mistral AI | |
| Tier | Flagship | Flagship |
| Context window | 1M | 256K |
| Max output | 66K | — |
| Input $/1M | $2.00 | $0.50 |
| Output $/1M | $12.00 | $1.50 |
| Cache read $/1M | $0.20 | — |
| Modalities | text, image | text |
Gemini 3.1 Pro. Listed as gemini-3.1-pro-preview. Standard tier for prompts up to 200K tokens; above that, $4 input / $18 output and $0.40 cache read per 1M. Cached context is also billed for storage at $4.50 per 1M tokens per hour.
Sources
Gemini 3.1 Pro — verified August 29, 2026
Mistral Large 3 — verified August 29, 2026
Full Gemini 3.1 Pro pricing page → · Full Mistral Large 3 pricing page →