Gemini 3.1 Pro Preview Custom Tools
The spec sheet
Figures as the maker publishes them.
Price
- Input, per 1M tokens
- $2
- Output, per 1M tokens
- $12
Memory
- Context window
- 1.05M tokens
- Longest answer
- 66K tokens
Abilities
- Reasoning
- Yes
- Reads images
- Yes
- Calls tools
- Yes
- Takes in
- text, audio, image, video, file
- Gives back
- text
The model
- Lab
- Model id
- google/gemini-3.1-pro-preview-customtools
- Released
- 25 Feb 2026
- Open weights
- No
