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.
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
2025-10-04 04:14:18