Gemini "Nano Banana" generally available

Model Name

The Gemini Nano Banana model is now generally available for everyone. For API access, the model name should be updated.

# Old
/models/gemini-2.5-flash-image-preview

# New
/models/gemini-2.5-flash-image

Aspect Ratio

The model now also supports a wider range of aspect ratios. This enables more use cases compared to OpenAI's GPT Image 1, which has only 3 types of aspect ratios.

{
  "generationConfig": {
    "imageConfig": {
      "aspectRatio": "1:1"
    }
  }
}

9:16 Example

We can use this aspect ratio for mobile phone wallpapers.

21:9 Example

This type is suitable for making banners.

AI Summary AI Summary
gpt-5-mini-2025-08-07 2025-10-04 04:13:42
Google's Gemini "Nano Banana" model is now generally available; users must update the API model name to access it. The release extends image-generation aspect ratios beyond the three options in OpenAI’s GPT Image 1, supporting wider formats like 9:16 for mobile wallpapers and 21:9 for banners. This increased aspect-ratio flexibility enables more practical image-generation use cases across different application layouts.
Chrome On-device AI 2025-10-20 21:00:37
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