Gemini 3.1 Flash Image

Preview

This product or feature is a Generative AI Preview offering, subject to the "Pre-GA Offerings Terms" of the Google Cloud Service Specific Terms, as well as the Additional Terms for Generative AI Preview Products. For this Generative AI Preview offering, Customers may elect to use it for production or commercial purposes, or disclose Generated Output to third-parties, and may process personal data as outlined in the Cloud Data Processing Addendum, subject to the obligations and restrictions described in the agreement under which you access Google Cloud. Pre-GA products are available "as is" and might have limited support. For more information, see the launch stage descriptions.

Gemini 3.1 Flash Image is optimized for image understanding and generation and offers a balance of price and performance.

Image generation specifications

Generating images with Gemini 3.1 Flash Image consumes up to 2520 tokens for each image generated.

Try in Vertex AI (Preview) Deploy example app

Note: To use the "Deploy example app" feature, you need a Google Cloud project with billing and Vertex AI API enabled.

Model ID	gemini-3.1-flash-image-preview
Supported inputs & outputs	Inputs: Text, Images Outputs: Text and image
Token limits	Maximum input tokens: 131,072 Maximum output tokens: 32,768
Capabilities	Supported System instructions Count Tokens Thinking Not supported Code execution Function calling Gemini Live API Implicit context caching Explicit context caching Vertex AI RAG Engine Chat completions
Consumption options	Supported Provisioned Throughput Standard PayGo Flex PayGo Batch prediction Not supported Priority PayGo
	See Consumption options for more information.
Input size limit	500 MB
Technical specifications
	Images	Maximum images per prompt: 14 Maximum file size per file for inline data or direct uploads through the console: 7 MB Maximum file size per file from Google Cloud Storage: 30 MB Maximum number of output images per prompt: Limited to 32,768 output tokens Supported aspect ratios: 1:1, 3:2, 2:3, 3:4, 4:3, 4:5, 5:4, 9:16, 16:9, and 21:9 Supported MIME types: image/png, image/jpeg, image/webp, image/heic, image/heif
	Documents	Maximum number of files per prompt: As supported by the 128k token context window Maximum number of pages per file: As supported by the 65,536 token context window Maximum file size per file: 50 MB (API and Cloud Storage imports) or 7 MB (direct upload through Google Cloud console) Supported MIME types: application/pdf, text/plain
	Parameter defaults	Temperature: 0.0-2.0 (default 1.0) topP: 0.0-1.0 (default 0.95) topK: - candidateCount: 1
Supported regions
	Model availability	Global global
	See Deployments and endpoints for more information.
Knowledge cutoff date	January 2025
Versions	gemini-3.1-flash-image-preview Launch stage: Public preview Release date: February 26, 2026
Supported languages	See Supported languages.
Pricing	See Pricing.