gemini-3.1-flash-image-preview · default

gemini-3.1-flash-image-preview is the retired official Google Nano Banana 2 preview ID, shut down in the Gemini API on June 25, 2026. Historical specifications include text, image, and PDF input, text and image output, thinking, search grounding, a 131,072-token input limit, and up to 32,768 output tokens. The stable release is gemini-3.1-flash-image; the current replacement is gemini-nano-banana-2.1.