# imagen-4.0-generate-001

Calls to the model imagen-4.0-generate-001 on Gemini API stopped working on August 17, 2026.

- API: Gemini API (generativelanguage.googleapis.com)
- Model: imagen-4.0-generate-001
- Kind: Model retirement
- Takes effect: August 17, 2026
- Calls after that day: fail
- Calls it hits: `model imagen-4.0-generate-001`
- Source: [Deprecations page](https://ai.google.dev/gemini-api/docs/deprecations)
- Page: https://www.okapi.bot/models/gemini-api/imagen-4.0-generate-001/

## What to use instead

Move to gemini-nano-banana-2.1, recommended by Google.

Nano Banana is called with generate_content (generateContent), not generate_images, and returns the image as a content part holding the image data instead of Imagen's generated-images response object.