Gemini 3.1 Flash Image (Nano Banana 2)

• Inputs:
  Text , Images , Video (Preview)
• Outputs:
  Text and image

• Maximum input tokens: 131,072
• Maximum output tokens: 32,768

Supported
• Image generation
• Interleaved images and text
• Edit images
• Multi-turn image editing
• Image generation from video input
• Grounding with Google Search
• System instructions
• Count Tokens
• Thinking
• Content Credentials (C2PA)
Not supported
• Code execution
• Supervised fine-tuning
• Continuous tuning
• Preference tuning
• Tuning checkpoints
• Function calling
• Gemini Live API
• Implicit context caching
• Explicit context caching
• Vertex AI RAG Engine
• Chat completions

Supported
• Provisioned Throughput
• Standard PayGo
• Flex PayGo
• Batch inference
Not supported
• Priority PayGo

• 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, 1:4, 4:1, 4:3, 4:5, 5:4, 1:8, 8:1, 9:16, 16:9, 21:9, 9:21
• Supported resolutions: 512, 1K, 2K, 4K (Preview)
• Supported MIME types:
  image/png , image/jpeg , image/webp , image/heic , image/heif

• 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

• Temperature: 0.0-2.0 (default 1.0)
• topP: 0.0-1.0 (default 0.95)
• topK: -
• candidateCount: 1

Model availability

Global
• global

• gemini-3.1-flash-image
• Launch stage: GA
• Release date: May 28, 2026

• Data residency
• CMEK
• VPC-SC
• AXT

• Data residency
• CMEK
• VPC-SC
• AXT