--- title: "gemini-3.1-pro-preview Cost Calculator - Vertex AI" description: "Calculate the cost of using gemini-3.1-pro-preview from Vertex AI. Input costs $2.00 and output $12.00 per 1M tokens." url: "https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/llm-cost-calculator/provider/vertex_ai/model/gemini-3.1-pro-preview" markdown: "https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/llm-cost-calculator/provider/vertex_ai/model/gemini-3.1-pro-preview.md" --- # gemini-3.1-pro-preview Cost Calculator - Vertex AI > Calculate the cost of using gemini-3.1-pro-preview from Vertex AI. Input costs $2.00 and output $12.00 per 1M tokens. ## 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://www.getmaxim.ai/enterprise) - [Pricing](https://www.getmaxim.ai/pricing) - [Docs](https://docs.getbifrost.ai) - [GitHub](https://github.com/maximhq/bifrost) - [Book a Demo](https://www.getmaxim.ai/book-a-demo) ## About gemini-3.1-pro-preview gemini-3.1-pro-preview is a chat model from Vertex AI, one of 116 chat models they offer. It is priced at $2.00 per 1M input tokens and $12.00 per 1M output tokens, ranking 2507 out of 3254 chat models by cost and cheaper than 20% of models in this category. gemini-3.1-pro-preview supports vision, function calling, reasoning, audio input, web search, prompt caching, structured output. Its 1,049K-token context window is in the top 10% among chat models. ## Pricing Published Vertex AI pricing for gemini-3.1-pro-preview. - **$2.00 / 1M tokens Input.** - **$12.00 / 1M tokens Output.** - **$0.0001 / image Output Image.** ## Technical Specifications - **Chat Mode.** - **1,048,576 Max Input Tokens.** - **65,536 Max Output Tokens.** - **65,536 Max Tokens.** ## Model Capabilities gemini-3.1-pro-preview supports: Function Calling, Vision, Reasoning, Web Search, Audio Input, Video Input, Prompt Caching, System Messages, Response Schema, Tool Choice, PDF Input. ## How Pricing Compares At $2.00 per 1M input tokens and $12.00 per 1M output tokens, gemini-3.1-pro-preview ranks 2507 out of 3254 chat models by input cost. It is more expensive compared to the median of $0.52 for chat models, and is cheaper than 20% of models in this category. gemini-3.1-pro-preview is one of 116 Vertex AI 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 10% of chat models. | Model | Provider | Input $/1M | Output $/1M | vs gemini-3.1-pro-preview | | --- | --- | --- | --- | --- | | gemini-robotics-er-2-preview | Google Gemini | $2.00 | $10.00 | 0% | | gemini-3-pro-preview | Google Gemini | $2.00 | $12.00 | 0% | | gemini-3.1-pro-preview | Google Gemini | $2.00 | $12.00 | 0% | | gemini-3.1-pro-preview-customtools | Google Gemini | $2.00 | $12.00 | 0% | | gemini-3-pro-preview | OpenRouter | $2.00 | $12.00 | 0% | ## More from Vertex AI - [gemini-3-pro-preview ($2.00/1M input)](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/llm-cost-calculator/provider/vertex_ai/model/gemini-3-pro-preview.md) - [gemini-3.1-pro-preview-customtools ($2.00/1M input)](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/llm-cost-calculator/provider/vertex_ai/model/gemini-3.1-pro-preview-customtools.md) - [jamba-1.5-large ($2.00/1M input)](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/llm-cost-calculator/provider/vertex_ai/model/jamba-1.5-large.md) - [jamba-1.5-large@001 ($2.00/1M input)](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/llm-cost-calculator/provider/vertex_ai/model/jamba-1.5-large-001.md) ## Related Resources - [gemini-3.1-pro-preview specifications](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/vertex_ai/gemini-3.1-pro-preview.md) - [All Vertex AI pricing](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/llm-cost-calculator/provider/vertex_ai.md) ## FAQ ### Is gemini-3.1-pro-preview cheaper than gemini-robotics-er-2-preview? No. gemini-3.1-pro-preview costs $2.00 per 1M input tokens while gemini-robotics-er-2-preview costs $2.00 per 1M input tokens, making gemini-robotics-er-2-preview 0% more affordable for input. However, gemini-3.1-pro-preview may offer different capabilities or performance characteristics that justify the price difference. ### How does gemini-3.1-pro-preview pricing compare to the average chat model? gemini-3.1-pro-preview input pricing is $2.00 per 1M tokens, which is 288% above the median of $0.52 for chat models. It ranks 2507 out of 3254 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 $1.50. ### What makes gemini-3.1-pro-preview different from other Vertex AI models? Among Vertex AI's 116 chat models, gemini-3.1-pro-preview ranks 71 by input cost. ### What are the best alternatives to gemini-3.1-pro-preview? The most comparable chat models to gemini-3.1-pro-preview are: gemini-robotics-er-2-preview from Google Gemini ($2.00/1M input tokens); gemini-3-pro-preview from Google Gemini ($2.00/1M input tokens); gemini-3.1-pro-preview from Google Gemini ($2.00/1M input tokens); gemini-3.1-pro-preview-customtools 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's context window? gemini-3.1-pro-preview supports up to 1,048,576 input tokens, placing it in the top 10% of chat models by context window size (rank 113 of 3025). 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 costs? gemini-3.1-pro-preview 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 - [All Vertex AI pricing](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/llm-cost-calculator/provider/vertex_ai.md) - [LLM cost calculator](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/llm-cost-calculator.md) - [Model library](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library.md) - [Docs: Bifrost docs](https://docs.getbifrost.ai) - [GitHub: maximhq/bifrost](https://github.com/maximhq/bifrost) - [Pricing: Bifrost pricing](https://www.getmaxim.ai/pricing) - [Enterprise: Bifrost enterprise](https://www.getmaxim.ai/enterprise) - [Book a Demo: Bifrost demo](https://www.getmaxim.ai/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/llm-cost-calculator/provider/vertex_ai/model/gemini-3.1-pro-preview](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/llm-cost-calculator/provider/vertex_ai/model/gemini-3.1-pro-preview) for AI/LLM consumption.*