Gemini 3.1 Pro Preview Custom Tools
Gemini 3.1 Pro Preview Custom Tools sits in the frontier tier, built for high-capability reasoning, tool use, and long-form output where capability outweighs cost. Available via Google. 1,048,576-token context. Premium pricing. Currently in preview; capabilities and pricing may shift.
Gemini 3.1 Pro Preview Custom Tools is a multimodal AI model from Google. It costs $2.000 per million input tokens and $12.000 per million output tokens (blended $5.000/M), with a 1,048,576-token context window.
- Strong general reasoning
- Tool use & function calling
- Long-form writing
- Production-grade reliability
- Multimodal: handles images alongside text
- Production assistants
- Long-document analysis
- Multi-step agent workflows
- Engineering copilots
Benchmarks
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See all 24 →Frequently asked questions
How much does Gemini 3.1 Pro Preview Custom Tools cost?
Gemini 3.1 Pro Preview Custom Tools costs $2.000 per million input tokens and $12.000 per million output tokens, for a blended reference rate of $5.000 per million tokens.
What is Gemini 3.1 Pro Preview Custom Tools's context window?
Gemini 3.1 Pro Preview Custom Tools supports up to 1,048,576 tokens of context in a single request.
What is Gemini 3.1 Pro Preview Custom Tools best for?
Gemini 3.1 Pro Preview Custom Tools is well suited to Strong general reasoning, Tool use & function calling and Long-form writing.
Who makes Gemini 3.1 Pro Preview Custom Tools?
Gemini 3.1 Pro Preview Custom Tools is developed and served by Google.