Gemini 3.1 Pro
Overview
Gemini 3.1 Pro is the flagship Pro-tier model of Google’s Gemini 3 series, built for advanced reasoning, coding, and multimodal tasks, currently available in preview. It accepts text, image, and PDF input with a million-token context window.
Key Features
- Flagship Pro Tier: Built for complex reasoning and coding
- Multimodal: Supports text, image, and PDF input
- Long Context: Million-token context
Best Use Cases
- Complex Reasoning: Analysis tasks requiring deep thinking
- Multimodal Analysis: Combined text, image, and document understanding
- Professional Coding: Large-codebase understanding and generation
Specifications
| Item | Detail |
|---|---|
| Platform model ID | gemini-3.1-pro-preview |
| Context window | 1,050,000 tokens |
| Input modalities | Text, image, PDF |
| Reasoning / thinking | Supported |
| First released (market) | 2026 |
| Live pricing | See the model marketplace |
Capabilities and Limitations
| Capability | Description |
|---|---|
| Reasoning | Strong. Flagship Pro tier |
| Multimodal | Supports text, image, and PDF input (no audio/video) |
| Context Window | 1,050,000 tokens |
| Speed | Moderate |
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