Gemini 3.1 Pro Preview

Google· released 19 Feb 2026

google/gemini-3.1-pro-preview

Input / 1M tokens: $2
Output / 1M tokens: $12

Context window1M tokens

Longest answer: 66K tokens

reads audioreads filereads imagereads textreads videotool callingvisionreasoning

About

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...

Details

Lab: Googleopenrouter.ai · 3 Oct 2026
Context: 1,049Kopenrouter.ai · 3 Oct 2026
Input price: $2 / 1Mopenrouter.ai · 3 Oct 2026
Output price: $12 / 1Mopenrouter.ai · 3 Oct 2026
Max output: 65,536 tokensopenrouter.ai · 3 Oct 2026
Inputs: audio, file, image, text, videoopenrouter.ai · 3 Oct 2026
Open weights: Noopenrouter.ai · 3 Oct 2026

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Sources

openrouter.ai/google/gemini-3.1-pro-preview· checked 3 Oct 2026