Gemini 3.1 Pro Preview Custom Tools
google/gemini-3.1-pro-preview-customtools-20260219
Google's Gemini 3.1 Pro Preview Custom Tools is a multimodal model that accepts text, audio, image, video, and file inputs and generates text output. It supports tool usage and reasoning, has a context length of 1,048,756 tokens, and is not released with open weights. Pricing is $2 per million input tokens and $12 per million output tokens; the model was released on 2026-02-26.
- tool use
- structured outputs
- reasoning
At a glance
Specifications
What the API gives you
- Context window
- 1.0M tokens
- Max output
- 66K tokens
- Input price
- $2 / 1M tokens
- Output price
- $12 / 1M tokens
- Cache read
- $0.20 / 1M tokens
- Modalities
- text, audio, image, video, file → text
- Knowledge cutoff
- —
- Released
- Feb 26, 2026
Recommendation coverage
Where this model appears
Not currently included in a published recommendation. This means the available task-specific evidence did not support a ranking yet—not that the model was reviewed and rejected.
Benchmarks
No independent benchmark results are linked to this model yet. We keep it visible while withholding quality claims until usable results arrive.
Catalog data via OpenRouter and models.dev. Last checked within the past 6 hours.