Nano Banana 3.1 Flash, the lightweight tier. Faster and cheaper than Pro, tuned for bulk generation and quick iteration. Use when you need a lot of images (thumbnails, avatars, concept variants) at lower per-unit cost. If the result is not quite right, there is no need to re-upload anything: just type another instruction in the same conversation, such as "change the background to night" or "translate the text to English", and the previously generated image is reused automatically for continuous refinement; uploading a new picture starts from that picture instead. Generated images are about 1024x1024 (1K resolution); the aspect ratio adjusts automatically to your prompt or reference image. Maximum total upload size per request: 256MB (all files and message content combined). Accepted image formats: jpeg, jpg, png. Maximum number of images: 10. Maximum size per image: 14MB. Maximum total image size per message: 14MB (text and history share the same request size limit; uploads close to the limit may still be rejected). Image dimensions: at least 200 pixels per side. Maximum image resolution: 36,000,000 pixels in total. Output content formats: Image Image output size: 1K (about 1024x1024 pixels). This module supports continuous conversations. AI can make mistakes. Please verify important information.