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Gemini 3.1 Pro Preview

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...

Context
1.05M
Input / 1M
$2
Output / 1M
$12
Released
Feb 19, 2026
View on OpenRouterFind it in the catalog
Specifications

Gemini 3.1 Pro Preview specs

Provider
Google
Type
API model
Model ID
google/gemini-3.1-pro-preview
Context window
1,048,576 tokens1.05M
Input price
$2per 1M input tokens
Output price
$12per 1M output tokens
Accepts
audio, file, image, text, video
Produces
text
Released
Feb 19, 2026
Popularity
33/100position #85 in OpenRouter's weekly usage ranking
Source
OpenRouter
Overview

About Gemini 3.1 Pro Preview

Gemini 3.1 Pro Preview is an API model from Google, released on Feb 19, 2026, with a context window of 1,048,576 tokens, pricing of $2 per million input tokens and $12 per million output tokens. It accepts audio, file, image, text, video input and produces text output.

At listed prices, a request with 10,000 input tokens and 1,000 output tokens costs about $0.032.

Specs are sourced from OpenRouter and were last checked on Nov 3, 2026. Always confirm current pricing and limits with the provider before production use.

Tool callingStructured outputsJSON modeReasoning
FAQ

Gemini 3.1 Pro Preview questions

What is the context window of Gemini 3.1 Pro Preview?

Gemini 3.1 Pro Preview supports a context window of 1,048,576 tokens.

How much does Gemini 3.1 Pro Preview cost?

Gemini 3.1 Pro Preview is listed at $2 per million input tokens and $12 per million output tokens on OpenRouter.

When was Gemini 3.1 Pro Preview released?

Gemini 3.1 Pro Preview was published on Feb 19, 2026.

What inputs does Gemini 3.1 Pro Preview accept?

Gemini 3.1 Pro Preview accepts audio, file, image, text, video input and produces text output.