Gemini 3.1 Pro Preview

This model improves upon Gemini 2.5 Pro and is catered towards challenging tasks, especially those involving complex reasoning or agentic workflows. Improvements highlighted include use cases for coding, multi-step function calling, planning, reasoning, deep knowledge tasks, and instruction following.

Model overview

Model ID: google/gemini-3.1-pro-preview
Provider: google
Type: language
Context window: 1,000,000 tokens
Max output tokens: 64,000

Tags: file-input, tool-use, reasoning, vision, implicit-caching

Model pricing

Metric	Value
`Input tokens (/1M)`	`$2.00`
`Output tokens (/1M)`	`$12.00`
`Image generation`	`n/a`
`Cached input read (/1M)`	`$0.20`
`Cached input write (/1M)`	`n/a`
`Pricing source`	`gateway`

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