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Gemini Nano Banana 2.1 reaches general availability

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Google says the image model improves visual quality and consistency, and sets an October shutdown date for the model it replaces.

Google marked Gemini Nano Banana 2.1 generally available on October 6, 2026, describing it as a high-efficiency model for image generation and conversational editing. The model is listed under ID gemini-nano-banana-2.1 and updates Nano Banana 2, identified as gemini-3.1-flash-image. Google says it retains Flash-level speed and cost efficiency while improving visual quality, prompt adherence, multi-turn character consistency and text rendering. Image generation supports panoramic ratios of 1:4, 4:1, 1:8 and 8:1 at 1K, 2K and 4K resolutions. The earlier gemini-3.1-flash-image model is deprecated and scheduled to shut down on October 29, 2026, so users of that model are directed to migrate to Nano Banana 2.1.

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