Major Release Google · Released
Gemini 3.1 Pro
What is Gemini 3.1 Pro?
Gemini 3.1 Pro is a Major Release AI model from Google, released on February 19, 2026. It has a 2M tokens context window, costs $2.50 per million input tokens, and scores 93.8% on MMLU-Pro. It is available via the company's API.
Google's flagship reasoning model with a 2x jump on hard multi-step tasks.
Google's latest flagship model with a major 2x jump in reasoning capabilities
Key features
- 2x reasoning improvement
- ARC-AGI-2 score of 77.1%
- Enhanced multimodal understanding
- Deep Think mode
How much does Gemini 3.1 Pro cost?
| Metric | Price |
|---|---|
| input per mtok | $2.50 |
| output per mtok | $10.00 |
| cached input per mtok | $0.25 |
Pricing data verified .
What context window does Gemini 3.1 Pro have?
- Context window
- 2M tokens
- Max output
- 64K
- Input modalities
- text, image, audio, video, PDF
- Output modalities
- text
How does Gemini 3.1 Pro score on benchmarks?
| Benchmark | Score |
|---|---|
| ARC-AGI-2 | 77.1% |
| MMLU-Pro | 93.8% |
| MATH | 89.4% |
| GPQA Diamond | 84.2% |
| SWE-bench Verified | 72.3% |
| LiveCodeBench | 78.9% |
Benchmark scores verified .
What's new
- 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
How does Gemini 3.1 Pro compare to Gemini 3 Pro?
- GPQA Diamond: 78.5% → 84.2% (+5.7pt)
- Input pricing: $2.50 → $2.50
- Context window: 1M tokens → 2M tokens