Gemini 3.1 Pro Preview
gemini-3.1-pro-preview
Google · chat · api · seen 12m ago
Preview
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Context
1M
Max output
65.5K
Input $/1M
$2.00
Output $/1M
$12.00
Modalities
text
Released
19 Feb 2026
AI summary
● machine-written
Google releases Gemini 3.1 Pro Preview with 1M token context
Gemini 3.1 Pro Preview is Google's frontier reasoning model designed to enhance software engineering performance and agentic reliability. It supports a 1M-token context window with multimodal input capabilities (text, image, video, audio, PDF) and text output. The model is optimized for tool use, multi-step workflows, and structured domains like finance and spreadsheet automation.
What's new
- 1M-token context window with 65.5K token max output
- Enhanced software engineering performance and agentic reliability
- Support for code execution, caching, function calling, and structured output
- New medium thinking level to balance cost, speed, and performance
- Released February 19, 2026
Best for
Autonomous agents and agentic coding workflowsSoftware engineering and complex multi-step tasksFinancial modeling and spreadsheet automationHigh-context enterprise and structured planning tasks
Source: https://ai.google.dev/gemini-api/docs/models/gemini-3.1-pro-preview