Google released Gemini Nano Banana 2.1 (gemini-nano-banana-2.1) as generally available, an update to gemini-3.1-flash-image with improved visual quality, prompt adherence, multi-turn character consistency, text rendering, and wide/panoramic aspect ratios (1:4, 4:1, 1:8, 8:1) at 1K, 2K, and 4K resolutions, while keeping Flash-level speed and cost. The older gemini-3.1-flash-image model is deprecated and will be shut down on October 29, 2026.
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What to doMigrate image generation code from gemini-3.1-flash-image to gemini-nano-banana-2.1 before the October 29, 2026 shutdown.
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- ai.google.dev