# imagen-4.0-ultra-generate-001

Calls to the model imagen-4.0-ultra-generate-001 on Vertex AI stopped working on June 30, 2026.

Calls to model imagen-4.0-ultra-generate-001 will stop working on June 30, 2026. After that date, requests targeting this model will fail. Review your applications using Vertex AI on aiplatform.googleapis.com to identify any dependencies on this identifier before the shutdown.

- API: Vertex AI (aiplatform.googleapis.com)
- Model: imagen-4.0-ultra-generate-001
- Kind: Model retirement
- Takes effect: June 30, 2026
- Calls after that day: fail
- Calls it hits: `model imagen-4.0-ultra-generate-001`
- Source: [Deprecations page](https://cloud.google.com/vertex-ai/generative-ai/docs/learn/model-versions)
- Page: https://www.okapi.bot/models/vertex-ai/imagen-4.0-ultra-generate-001/

## What to use instead

Move to gemini-3.1-flash-lite-image instead. Note that gemini-2.5-flash-image, named first, stops working on March 15, 2027.