OpenCraftgoogle · chat model
Try Gemini 3.1 Pro Preview Custom Tools online
google/gemini-3.1-pro-preview-customtoolsAdded to OpenRouter: 25 Feb 2026
Tracking since: · Specs updated:
Use Gemini 3.1 Pro Preview Custom Tools in your browser. Explore pricing and capabilities below, or start a chat in OpenCraft.
Input price$2.00per M tokenscheaper than 15% of chat models
Output price$12.00per M tokenscheaper than 12% of chat models
Cache read$0.20per M tokens
Context window1Mtokensof the largest window in the catalog (10M)
Gemini 3.1 Pro Preview Custom Tools pricing: what a turn costs
Estimates from the published token rates above — real turns vary with tool calls and transcript length.
- Quick answer2K tokens in, 600 out$0.011
- 10-slide deck build60K tokens in, 9K out$0.228
- 150-page PDF read200K tokens in, 4K out$0.448
Specs and listed prices from OpenRouter. Actual usage cost depends on the serving provider.
How to use Gemini 3.1 Pro Preview Custom Tools
- Select “Try Gemini 3.1 Pro Preview Custom Tools online” to open OpenCraft with this model selected.
- Sign in or create an account if prompted.
- Type a question or describe a task, then send your message.
To compare answers, start a separate chat with another model and use the same prompt.
Gemini 3.1 Pro Preview Custom Tools capabilities
tool-usevisionreasoning
text, audio, image, video, file in → text out
Create with OpenCraft
See example outputs and find a workflow for your next project.