GOOGLE VS MISTRAL
Gemini 3.1 Pro Preview vs Mistral Medium 3.5
Mistral Medium 3.5 is about 1.5x cheaper than Gemini 3.1 Pro Preview on a blended 3:1 input:output rate — the same 10K-in/2K-out request costs $0.03 vs $0.044. Gemini 3.1 Pro Preview has the larger context window (1,048,576 vs 262,144 tokens).
Pricing verified
API pricing per 1M tokens
| Model | Input / 1M tokens | Output / 1M tokens | Blended (3:1 mix) |
|---|---|---|---|
| Gemini 3.1 Pro Preview | $2.00 | $12.00 | $4.50 |
| Mistral Medium 3.5 | $1.50 | $7.50 | $3.00 |
Rates from official Google pricing and official Mistral pricing, checked 2026-08-11.
What a real workload costs
Example: one request with 10,000 input tokens and 2,000 output tokens, then that request at 100,000 runs per month.
| Model | Per request (10K in / 2K out) | Per month (100K requests) | Monthly delta |
|---|---|---|---|
| Gemini 3.1 Pro Preview | $0.044 | $4,400 | +$1,400 |
| Mistral Medium 3.5 | $0.03 | $3,000 | — |
Model your own prompt sizes and volumes in the token cost analyzer, or check caching savings with the prompt caching calculator.
Specs side by side
| Spec | Gemini 3.1 Pro Preview | Mistral Medium 3.5 |
|---|---|---|
| Provider | Mistral | |
| Context window | 1,048,576 tokens | 262,144 tokens |
| Model class | Reasoning | General text |
| Tokenizer | Proprietary (counts estimated) | Proprietary (counts estimated) |
Count tokens for each model on its own page: Gemini 3.1 Pro Preview token counter and Mistral Medium 3.5 token counter. All Google models are on the Gemini Token Counter. All Mistral models are on the Mistral Token Counter.
FAQ
Gemini 3.1 Pro Preview vs Mistral Medium 3.5 FAQ
Which is cheaper, Gemini 3.1 Pro Preview or Mistral Medium 3.5?
Mistral Medium 3.5 is cheaper. At rates checked 2026-08-11, Gemini 3.1 Pro Preview costs $2.00 input / $12.00 output per 1M tokens, while Mistral Medium 3.5 costs $1.50 input / $7.50 output — about a 1.5x difference on a typical 3:1 input-heavy workload.
How much does a real request cost on Gemini 3.1 Pro Preview vs Mistral Medium 3.5?
A request with 10,000 input tokens and 2,000 output tokens costs about $0.044 on Gemini 3.1 Pro Preview and $0.03 on Mistral Medium 3.5. At 100,000 such requests per month that is $4,400 vs $3,000 — a difference of $1,400 per month.
Which has the bigger context window, Gemini 3.1 Pro Preview or Mistral Medium 3.5?
Gemini 3.1 Pro Preview. It supports 1,048,576 tokens of context versus 262,144 tokens — roughly 786,000 English words in one request.
Do Gemini 3.1 Pro Preview and Mistral Medium 3.5 count tokens the same way?
Not exactly. Gemini 3.1 Pro Preview uses a proprietary tokenizer (counts are estimates) and Mistral Medium 3.5 uses a proprietary tokenizer (counts are estimates). The same prompt will tokenize differently, which shifts effective cost per word.