Google: Gemini 3.1 Pro Preview Custom Tools
google/gemini-3.1-pro-preview-customtools
Gemini 3.1 Pro Preview Custom Tools is a variant of Gemini 3.1 Pro that improves tool selection behavior by preventing overuse of a general bash tool when more efficient third-party...
Modalities
TextAudioImageVideoFile
In / out price
₩3,510 / ₩21,060
1M
Context
1.05M
Released
Feb 26, 2026
Pricing
Prices are quoted in Korean won. Changes to the exchange rate or margin show up immediately.
| Input (prompt) | ₩3,510 / 1M |
| Output (completion) | ₩21,060 / 1M |
| Cache read | ₩351 / 1M |
| Cache write | ₩658 / 1M |
1,000 input tokens plus 1,000 output tokens costs about ₩24.57.