Images as input
Choose Gemini 3.1 Pro
Gemini 3.1 Pro accepts images as input; Devstral 2 does not.
Devstral 2 vs Gemini 3.1 Pro: price, context and capabilities
Choose Gemini 3.1 Pro for images as input and the latest release; on the other points the two are level or the data is missing.
In short
- Devstral 2 has been retired; Gemini 3.1 Pro is the one you can still call.
- A price comparison is not possible: one of them has no comparable published price.
- Gemini 3.1 Pro is the newer model (February 2026, against December 2025).
- Only Gemini 3.1 Pro offers vision, reasoning, tool calling, structured output, prompt caching, batch api.
Which should you choose?
Each answer below comes straight from the published prices, specifications and independent benchmark results.
Latest release
Choose Gemini 3.1 Pro
Gemini 3.1 Pro is the newer release (February 2026, against December 2025 for Devstral 2).
Specifications side by side
| Devstral 2 | Gemini 3.1 Pro | |
|---|---|---|
| Provider | Mistral AI | |
| Category | Language models | Language models |
| Status | Retired | Preview |
| Headline price | No data | $4.50 / 1M tokens |
| Input | No data | $2.00 / 1M tokens |
| Output | No data | $12.00 / 1M tokens |
| Cached input | No data | $0.20 / 1M tokens |
| Context window | No data | 1.05M |
| Max output | No data | 66k |
| Released | December 2025 | February 2026 |
| Knowledge cutoff | No data | No data |
| Licence | Proprietary | Proprietary |
| Capabilities | No data | Vision, Reasoning, Tool calling, Structured output, Prompt caching, Batch API |
| API model id | devstral-2512 | gemini-3.1-pro-preview |
Benchmarks side by side
Leader in bold.
| Benchmark | Devstral 2 | Gemini 3.1 Pro |
|---|---|---|
| Intelligence Index | No data | 29.7 |
| Terminal-Bench Hard | No data | 53.8% |
| SciCode | No data | 58.7% |
| GPQA Diamond | No data | 94.1% |
| Humanity's Last Exam | No data | 47% |
| IFBench (instruction following) | No data | 77.1% |
| τ²-Bench (agentic tool use) | No data | 95.6% |
| MMMU-Pro (visual reasoning) | No data | 82.4% |
| Long-context reasoning (AA-LCR) | No data | 82% |
Independent evaluations by Artificial Analysis, run the same way for every model, at the reasoning setting shown. Percentages unless marked as an index.
Frequently asked questions
Should I choose Devstral 2 or Gemini 3.1 Pro?
Choose Gemini 3.1 Pro for images as input and the latest release; on the other points the two are level or the data is missing.
Which is cheaper, Devstral 2 or Gemini 3.1 Pro?
A price comparison is not possible: one of them has no comparable published price.
What is the difference between Devstral 2 and Gemini 3.1 Pro?
Devstral 2 is made by Mistral AI and Gemini 3.1 Pro by Google. Devstral 2 has been retired; Gemini 3.1 Pro is the one you can still call. A price comparison is not possible: one of them has no comparable published price. Gemini 3.1 Pro is the newer model (February 2026, against December 2025). Only Gemini 3.1 Pro offers vision, reasoning, tool calling, structured output, prompt caching, batch api.
Which is newer, Devstral 2 or Gemini 3.1 Pro?
Gemini 3.1 Pro was released on February 2026 and Devstral 2 on December 2025.