# Gemini 3.1 Pro Preview: AI model fact sheet

- **Provider:** google
- **Released:** 2026-02-19
- **Context window:** 1,048,576 tokens
- **API pricing:** $2.00 / 1M input, $12.00 / 1M output
- **OpenRouter ID:** google/gemini-3.1-pro-preview
- **Capabilities:** conversation, reasoning, code-generation, analysis, tool-use, agentic-tool-use

Gemini 3.1 Pro Preview is Google's frontier reasoning model, delivering enhanced software engineering performance, improved agentic reliability, and more efficient token usage across complex workflows. Building on the multimodal foundation of the Gemini 3 series, it combines high-precision reasoning across text, image, video, audio, and code with a 1M-token context window. The 3.1 update introduces measurable gains in SWE benchmarks and real-world coding environments, along with stronger autonomous task execution in structured domains such as finance and spreadsheet-based workflows. Designed for advanced development and agentic systems, it introduces a new medium thinking level to better balance cost, speed, and performance.

## Benchmarks

| Benchmark | Score |
| --- | --- |
| SWE-bench Verified | 80.6% |
| GPQA Diamond | 94.3% |
| ARC-AGI-2 | 77.1% |
| APEX-Agents | 33.5% |

Source: real side-by-side outputs, pricing and specs at https://rival.tips/models/gemini-3.1-pro-preview