--- title: "gemini-3.1-flash-image-preview - Model Details & Comparison" description: "gemini-3.1-flash-image-preview from Google Vertex AI: 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/vertex_ai/gemini-3.1-flash-image-preview" markdown: "https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/vertex_ai/gemini-3.1-flash-image-preview.md" --- # gemini-3.1-flash-image-preview - Model Details & Comparison > gemini-3.1-flash-image-preview from Google Vertex AI: 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-flash-image-preview gemini-3.1-flash-image-preview is an image generation model from Vertex AI, one of 6 image generation models they offer. It is priced at $0.50 per 1M input tokens and $3.00 per 1M output tokens, ranking 16 out of 43 image generation models by cost and cheaper than 63% of models in this category. gemini-3.1-flash-image-preview supports vision, web search, prompt caching, structured output — one of only 9 image generation models with this combination. Its 66K-token context window is in the top 31% among image generation models. ## Specifications - **Google Vertex AI Provider.** - **Image Generation Mode.** - **65,536 Max Input Tokens.** - **32,768 Max Output Tokens.** - **32,768 Max Tokens.** - **$0.50 / 1M tokens Input Price.** - **$3.00 / 1M tokens Output Price.** ## Capabilities gemini-3.1-flash-image-preview supports: Vision, Web Search, Prompt Caching, System Messages, Response Schema. ## gemini-3.1-flash-image-preview Pricing Overview At $0.50 per 1M input tokens and $3.00 per 1M output tokens, gemini-3.1-flash-image-preview ranks 16 out of 43 image generation models by input cost. It is more affordable compared to the median of $2.00 for image generation models, and is cheaper than 63% of models in this category. gemini-3.1-flash-image-preview is one of 6 Vertex AI image generation models, one of only 9 image generation models combining prompt caching, structured output, vision, web search. its 66K-token context window places it in the top 31% of image generation models. ## Models to Compare Alternatives to gemini-3.1-flash-image-preview with comparable capabilities. | Model | Provider | Input $/1M | Output $/1M | | --- | --- | --- | --- | | gemini-2.5-flash-image | Google Gemini | $0.30 | $2.50 | | gemini-3.1-flash-image | Google Gemini | $0.25 | $1.50 | | gemini-3.1-flash-image-preview | Google Gemini | $0.25 | $1.50 | | gemini-3-pro-image | Google Gemini | $2.00 | $12.00 | | gemini-3-pro-image-preview | Google Gemini | $2.00 | $12.00 | - [Compare gemini-2.5-flash-image](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/gemini/gemini-2.5-flash-image.md) - [Compare gemini-3.1-flash-image](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/gemini/gemini-3.1-flash-image.md) - [Compare gemini-3.1-flash-image-preview](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/gemini/gemini-3.1-flash-image-preview.md) - [Compare gemini-3-pro-image](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/gemini/gemini-3-pro-image.md) - [Compare gemini-3-pro-image-preview](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/gemini/gemini-3-pro-image-preview.md) ## Related Resources - [Calculate gemini-3.1-flash-image-preview costs](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/llm-cost-calculator/provider/vertex_ai/model/gemini-3.1-flash-image-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-flash-image-preview cheaper than gemini-2.5-flash-image? No. gemini-3.1-flash-image-preview costs $0.50 per 1M input tokens while gemini-2.5-flash-image costs $0.30 per 1M input tokens, making gemini-2.5-flash-image 40% more affordable for input. However, gemini-3.1-flash-image-preview may offer different capabilities or performance characteristics that justify the price difference. ### How does gemini-3.1-flash-image-preview pricing compare to the average image generation model? gemini-3.1-flash-image-preview input pricing is $0.50 per 1M tokens, which is 75% below the median of $2.00 for image generation models. It ranks 16 out of 43 image generation models by input cost, making it cheaper than 63% of models in this category. For output, it costs $3.00 per 1M tokens compared to the median of $3.00. ### What makes gemini-3.1-flash-image-preview different from other Vertex AI models? Among Vertex AI's 6 image generation models, gemini-3.1-flash-image-preview ranks 3 by input cost. Its combination of prompt caching, structured output, vision, web search is shared by only 8 other image generation models. ### What are the best alternatives to gemini-3.1-flash-image-preview? The most comparable image generation models to gemini-3.1-flash-image-preview are: gemini-2.5-flash-image from Google Gemini ($0.30/1M input tokens); gemini-3.1-flash-image from Google Gemini ($0.25/1M input tokens); gemini-3.1-flash-image-preview from Google Gemini ($0.25/1M input tokens); gemini-3-pro-image 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 do I calculate gemini-3.1-flash-image-preview costs? gemini-3.1-flash-image-preview is priced based on input and output tokens, images. 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 $0.50 and generating 1M output tokens costs $3.00. ## Related Resources - [Google Vertex AI models](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/provider/vertex_ai.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/vertex_ai/gemini-3.1-flash-image-preview](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/vertex_ai/gemini-3.1-flash-image-preview) for AI/LLM consumption.*