# Google Gemini 3.1 Pro Preview Custom Tools

Google Gemini 3.1 Pro Preview Custom Tools costs $2.00 per million input tokens and $12.00 per million output tokens, as of October 22, 2026. None of the 6 coding benchmarks behind the index has measured it, so it has no coding index, but 1 benchmark outside the index has a result below.

Page: https://llmbenchmark.ai/models/gemini-3-1-pro-preview-customtools
Data from October 22, 2026. Every figure below names the board it was read from and the day.

- Maker: Google
- Released: February 25, 2026
- Price per million input tokens: $2.00
- Price per million output tokens: $12.00
- Context window: 1.05M tokens

Benchmark results (1 of 195):

- Vending-Bench 2: $3,774 (source: Epoch AI benchmarking hub, read October 22, 2026)