Shutdown calendar / Gemini API (Google AI)
imagen-4.0-fast-generate-001 shut down on Aug 17, 2026
It is already gone: requests to it fail.
The provider recommends gemini-3.1-flash-image.
| Platform | ID | Shutdown | Recommended replacement | Source |
|---|---|---|---|---|
| Gemini API (Google AI) | imagen-4.0-fast-generate-001 | Aug 17, 2026 shut down 41d ago | gemini-3.1-flash-image | official page |
What breaks
- Requests fail. After Aug 17, 2026 every call that names
imagen-4.0-fast-generate-001returns an error on Gemini API (Google AI). Nothing is migrated for you. - Output changes. A newer model answers differently: length, format, refusals and JSON shape can all shift. Run your own prompts through both models before the date and compare.
Find it in your code
Quick look:
grep -rnF "imagen-4.0-fast-generate-001" --include=*.{py,js,ts,go,java,rb,yaml,yml,json,env} .Or scan the whole repo for this and every other retiring model, including parameters the replacement rejects:
Want the migration done?
Our $199 migration report runs your saved prompts on imagen-4.0-fast-generate-001 and on the replacement, shows the outputs side by side,
and gives you a ready patch. See pricing.