--- title: "gemini-3.1-pro-preview-customtools - Model Details & Comparison" description: "gemini-3.1-pro-preview-customtools from Google Gemini: capabilities, context limits, pricing, and side-by-side comparisons with alternative models." url: "https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/gemini/gemini-3.1-pro-preview-customtools" markdown: "https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/gemini/gemini-3.1-pro-preview-customtools.md" --- # gemini-3.1-pro-preview-customtools - Model Details & Comparison > gemini-3.1-pro-preview-customtools from Google Gemini: capabilities, context limits, pricing, and side-by-side comparisons with alternative models. ## Important Links - [View MCP Gateway](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/resources/mcp-gateway.md) - [Features](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/#features) - [Enterprise](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/enterprise) - [Pricing](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/pricing.md) - [Docs](https://docs.getbifrost.ai) - [GitHub](https://github.com/maximhq/bifrost) - [Book a Demo](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/book-a-demo) ## About gemini-3.1-pro-preview-customtools gemini-3.1-pro-preview-customtools is a chat model from Google Gemini, one of 34 chat models they offer. It is priced at $2.00 per 1M input tokens and $12.00 per 1M output tokens, ranking 2059 out of 2669 chat models by cost and cheaper than 20% of models in this category. gemini-3.1-pro-preview-customtools supports vision, function calling, reasoning, audio input, web search, prompt caching, structured output. Its 1,049K-token context window is in the top 7% among chat models. ## Specifications - **Google Gemini Provider.** - **Chat Mode.** - **1,048,576 Max Input Tokens.** - **65,536 Max Output Tokens.** - **65,536 Max Tokens.** - **$2.00 / 1M tokens Input Price.** - **$12.00 / 1M tokens Output Price.** ## Capabilities gemini-3.1-pro-preview-customtools supports: Function Calling, Vision, Reasoning, Web Search, Audio Input, Video Input, Prompt Caching, System Messages, Response Schema, Tool Choice, PDF Input. ## gemini-3.1-pro-preview-customtools Pricing Overview At $2.00 per 1M input tokens and $12.00 per 1M output tokens, gemini-3.1-pro-preview-customtools ranks 2059 out of 2669 chat models by input cost. It is more expensive compared to the median of $0.50 for chat models, and is cheaper than 20% of models in this category. gemini-3.1-pro-preview-customtools is one of 34 Google Gemini chat models, with support for vision, function calling, reasoning, audio input, web search, prompt caching, structured output. its 1,049K-token context window places it in the top 7% of chat models. ## Models to Compare Alternatives to gemini-3.1-pro-preview-customtools with comparable capabilities. | Model | Provider | Input $/1M | Output $/1M | | --- | --- | --- | --- | | gemini-3-pro-preview | Vertex AI | $2.00 | $12.00 | | gemini-3.1-pro-preview | Vertex AI | $2.00 | $12.00 | | gemini-3.1-pro-preview-customtools | Vertex AI | $2.00 | $12.00 | | gemini-3-pro-preview | OpenRouter | $2.00 | $12.00 | | claude-sonnet-5 | Anthropic | $2.00 | $10.00 | - [Compare gemini-3-pro-preview](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/vertex_ai/gemini-3-pro-preview.md) - [Compare gemini-3.1-pro-preview](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/vertex_ai/gemini-3.1-pro-preview.md) - [Compare gemini-3.1-pro-preview-customtools](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/vertex_ai/gemini-3.1-pro-preview-customtools.md) - [Compare gemini-3-pro-preview](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/openrouter/gemini-3-pro-preview.md) - [Compare claude-sonnet-5](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/anthropic/claude-sonnet-5.md) ## Related Resources - [Calculate gemini-3.1-pro-preview-customtools costs](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/llm-cost-calculator/provider/gemini/model/gemini-3.1-pro-preview-customtools.md) - [All Google Gemini pricing](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/llm-cost-calculator/provider/gemini.md) ## FAQ ### Is gemini-3.1-pro-preview-customtools cheaper than gemini-3-pro-preview? No. gemini-3.1-pro-preview-customtools costs $2.00 per 1M input tokens while gemini-3-pro-preview costs $2.00 per 1M input tokens, making gemini-3-pro-preview 0% more affordable for input. However, gemini-3.1-pro-preview-customtools may offer different capabilities or performance characteristics that justify the price difference. ### How does gemini-3.1-pro-preview-customtools pricing compare to the average chat model? gemini-3.1-pro-preview-customtools input pricing is $2.00 per 1M tokens, which is 300% above the median of $0.50 for chat models. It ranks 2059 out of 2669 chat models by input cost, making it cheaper than 20% of models in this category. For output, it costs $12.00 per 1M tokens compared to the median of $1.44. ### What makes gemini-3.1-pro-preview-customtools different from other Google Gemini models? Among Google Gemini's 34 chat models, gemini-3.1-pro-preview-customtools ranks 33 by input cost. ### What are the best alternatives to gemini-3.1-pro-preview-customtools? The most comparable chat models to gemini-3.1-pro-preview-customtools are: gemini-3-pro-preview from Vertex AI ($2.00/1M input tokens); gemini-3.1-pro-preview from Vertex AI ($2.00/1M input tokens); gemini-3.1-pro-preview-customtools from Vertex AI ($2.00/1M input tokens); gemini-3-pro-preview from OpenRouter ($2.00/1M input tokens). These alternatives were selected based on similar capabilities, pricing, and provider diversity. You can compare any of these models in detail using the Bifrost Model Library. ### How large is gemini-3.1-pro-preview-customtools's context window? gemini-3.1-pro-preview-customtools supports up to 1,048,576 input tokens, placing it in the top 7% of chat models by context window size (rank 124 of 2653). This makes it suitable for processing long documents, extensive code repositories, or maintaining detailed conversation histories. ### How do I calculate gemini-3.1-pro-preview-customtools costs? gemini-3.1-pro-preview-customtools is priced based on input and output tokens. Use the interactive calculator at the top of this page to estimate costs for your specific workload. Enter your expected input and output tokens volume and the calculator will show the total cost breakdown. For reference, processing 1M input tokens costs $2.00 and generating 1M output tokens costs $12.00. ## Related Resources - [Google Gemini models](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/provider/gemini.md) - [Model library](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library.md) - [LLM cost calculator](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/llm-cost-calculator.md) - [Docs: Bifrost docs](https://docs.getbifrost.ai) - [GitHub: maximhq/bifrost](https://github.com/maximhq/bifrost) - [Pricing: Bifrost pricing](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/pricing.md) - [Enterprise: Bifrost enterprise](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/enterprise) - [Book a Demo: Bifrost demo](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/book-a-demo) - [Resources: Bifrost resources](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/resources.md) --- *This is a markdown version of [https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/gemini/gemini-3.1-pro-preview-customtools](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/gemini/gemini-3.1-pro-preview-customtools) for AI/LLM consumption.*