Gemini 3.1 Pro Preview

Google - gemini-3.1-pro-preview

8/10

Provisional 0 practitioner reviews Source verified

Data source: This model page uses public provider documentation, pricing/context data, benchmark signals where available, and manual curation. Practitioner reviews are listed separately below and do not change the score until approved.

Context window

1,048,576 tokens

Input price

$2/1M

Output price

$12/1M

Checked

May 16, 2026

Pricing caveat: Standard paid-tier pricing for prompts up to 200K tokens; prompts above 200K have higher input and output prices.

Decision Notes

Best for

  • - Long-context multimodal RAG over documents, images, video, audio, or PDFs
  • - Agentic coding tasks that benefit from Gemini tool support
  • - Teams that can tolerate preview-model lifecycle risk for higher capability

Avoid when

  • - Production systems that require stable model IDs only
  • - Prompts above 200K tokens where Gemini Pro long-context pricing increases materially

Cost example

1M input tokens plus 200K output tokens costs about $4.40 at standard pricing for prompts up to 200K tokens.

Dimension Breakdown

Tool Calling 9/10

Reliability of function/tool calling — correct schema adherence and parameter extraction

Cost Efficiency 6/10

Price per token relative to output quality for agent tasks

Latency 7/10

Response time — time to first token and total generation time under load

API Reliability 8/10

Uptime, rate limit headroom, and error rates in production

Context Quality 10/10

Long-context coherence and instruction following over turns

Share Your Experience

Have production experience with Gemini 3.1 Pro Preview? Add the first real review to improve confidence in this score.

Submit a Review

Top Use Cases

RAG Coding General

Summary

Google preview model with a 1,048,576-token input limit and strong multimodal agent features. Its preview status and tiered pricing deserve explicit production testing.

Sources

Practitioner Reviews

No reviews yet

Be the first to share your experience with Gemini 3.1 Pro Preview.

Related Models

Last updated: May 16, 2026