Gemini 3.1 Flash Image

Google launches Gemini 3.1 Flash Image (Nano Banana 2), faster and cheaper image generation

Google released Gemini 3.1 Flash Image (internally codenamed Nano Banana 2), a successor to Nano Banana Pro that is approximately four times faster and half the cost per image. The system is built on a mixture-of-experts transformer based on Gemini 3 Flash and supports up to 4096x4096 resolution, multilingual text rendering, and character consistency across images. It leads the Arena.ai text-to-image leaderboard by human preference (1,280 Elo) and competes closely with OpenAI's GPT Image 1.5 across multiple leaderboards, positioning Google competitively in the rapidly escalating image generation market.