Gemini 3.1 Pro
Whole-codebase, whole-document, or long-video analysis in a single request.
What are Gemini 3.1 Pro's specs and price?
Gemini 3.1 Pro, built by Google, ships a 2M-token context window and a 64K-token max output, released 2026-02. It supports text and vision and audio input with a dedicated reasoning mode and costs $4.50 per million blended tokens, the 28th-cheapest of 32 models we track.
Specs
| Context window | 2M tokens |
| Max output | 64K tokens |
| Modalities | text, vision, audio |
| Extended thinking | Yes |
| Released | 2026-02 |
| Knowledge cutoff | 2025-11 |
| Provider |
Verified 2026-08-08 — source.
Where it ranks
Strengths
- Largest context window of any current model (2M tokens)
- Native audio and video understanding
- Google Search grounding
More about Gemini 3.1 Pro
FAQ
What is Gemini 3.1 Pro's context window?
Gemini 3.1 Pro has a 2M-token context window and a 64K-token max output — the 1st-largest context of the 32 current models we track. Source: https://ai.google.dev/gemini-api/docs/models, verified 2026-08-08.
Does Gemini 3.1 Pro support vision or audio input?
Yes — Gemini 3.1 Pro accepts vision and audio input in addition to text.
Does Gemini 3.1 Pro have a reasoning or extended-thinking mode?
Yes — Gemini 3.1 Pro exposes a dedicated reasoning mode for multi-step problems.
When was Gemini 3.1 Pro released, and what is its knowledge cutoff?
Gemini 3.1 Pro was released 2026-02 with a knowledge cutoff of 2025-11.
How much does Gemini 3.1 Pro cost, and who provides it?
Gemini 3.1 Pro is served by Google at $4.50/M blended tokens (3:1 input:output) — the 28th-cheapest of 32 current models. Full pricing breakdown: /llm-api-pricing/gemini-3-1-pro.