--- title: "gemini-3.1-pro-preview-customtools - Model Details & Comparison" description: "gemini-3.1-pro-preview-customtools from OpenRouter: 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/openrouter/gemini-3.1-pro-preview-customtools" markdown: "https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/openrouter/gemini-3.1-pro-preview-customtools.md" --- # gemini-3.1-pro-preview-customtools - Model Details & Comparison > gemini-3.1-pro-preview-customtools from OpenRouter: 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 OpenRouter, one of 357 chat models they offer. It is priced at $2.00 per 1M input tokens and $12.00 per 1M output tokens, ranking 2126 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, prompt caching, structured output. Its 1,049K-token context window is in the top 7% among chat models. ## Specifications - **OpenRouter 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, Audio Input, Prompt Caching, 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 2126 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 357 OpenRouter chat models, with support for vision, function calling, reasoning, audio input, 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 | Google Gemini | $2.00 | $12.00 | | gemini-3.1-pro-preview | Google Gemini | $2.00 | $12.00 | - [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/gemini/gemini-3-pro-preview.md) - [Compare gemini-3.1-pro-preview](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/gemini/gemini-3.1-pro-preview.md) ## Related Resources - [Calculate gemini-3.1-pro-preview-customtools costs](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/llm-cost-calculator/provider/openrouter/model/gemini-3.1-pro-preview-customtools.md) - [Check OpenRouter status](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/provider-status/openrouter.md) - [All OpenRouter pricing](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/llm-cost-calculator/provider/openrouter.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 2126 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 OpenRouter models? Among OpenRouter's 357 chat models, gemini-3.1-pro-preview-customtools ranks 279 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 Google Gemini ($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 170 of 2653). This makes it suitable for processing long documents, extensive code repositories, or maintaining detailed conversation histories. ### How do I check if OpenRouter is down? You can monitor OpenRouter service health in real time on the Bifrost OpenRouter Status page. It tracks current component status, active incidents, and historical reliability data pulled from the official status page every 60 seconds. ### 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 - [OpenRouter models](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/provider/openrouter.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/openrouter/gemini-3.1-pro-preview-customtools](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/openrouter/gemini-3.1-pro-preview-customtools) for AI/LLM consumption.*