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Gemini 3.1 Pro Preview Custom ToolsAPI
Gemini 3.1 Pro Preview Custom Tools (Google): live API pricing, context window and the best open-source alternatives, tracked daily by olud.ai.
Prices update automatically — checked daily against provider list prices.
- $4.5 per 1M tokens, assuming 3 input for 1 output the convention used by Artificial Analysis
- cheaper than 27% of the 192 commercial models tracked here
- 33 of 34 Google models tracked here, from cheapest
Benchmarks
Artificial Analysis measures 273 of the 383 models tracked here — this one is not yet covered. The pricing position above is measured across the full catalog and does not depend on benchmarks.
About this model
Gemini 3.1 Pro Preview Custom Tools is a commercial AI model by Google. The specifications below are tracked automatically: pricing is refreshed daily from public list prices, so the numbers on this page reflect the current cost of using the model through its API.
Frequently asked questions
What is Gemini 3.1 Pro Preview Custom Tools?
Gemini 3.1 Pro Preview Custom Tools is an AI language model from Google. It is a proprietary model, available through an API.
Is Gemini 3.1 Pro Preview Custom Tools free?
Gemini 3.1 Pro Preview Custom Tools is not free: it costs $2 per million input tokens and $12 per million output tokens. Open-weight alternatives can be self-hosted at no per-token cost.