Is imagen-4.0-fast-generate-001 deprecated?

Q: Is imagen-4.0-fast-generate-001 deprecated?

Yes — deprecated. Retired 2026-08-17 — 30 days ago. Requests to this identifier are expected to fail.

DEPRECATED

Retired 2026-08-17 — 30 days ago. Requests to this identifier are expected to fail.

state=dead sunset=2026-08-17 days_remaining=-30 severity=critical sources=litellm evidence_tier=catalog confirmed_by_endpoint=false documented_by_provider=false replacement=none corroborated=single-source divergent_fields=none checked=2026-09-16 03:02Z

google/imagen-4.0-fast-generate-001

Vendor: google. Tracked by 1 of 5 sources.

What each source reports

**endpoint** = the provider's own machine-readable API, the strongest evidence. **provider docs** = the provider's own documentation, read by a model — first-party content, inferred reading. Unlabelled rows are third-party catalogs. Where sources disagree both values are shown rather than silently reconciled.
Source	ID	Context	Max out	In $/Mtok	Out $/Mtok	Sunset
litellm	gemini/imagen-4.0-fast-generate-001	—	—	—	—	2026-08-17

Change history

Severity	Change	What	Detected
medium	removed	[one catalog only — litellm still list it] imagen-4.0-fast-generate-001 is no longer listed by this source — calls to it are expected to fail	2026-08-17
critical	deprecated	gemini/imagen-4.0-fast-generate-001: deprecation announced for 2026-08-17 — in 5 days	2026-08-12
critical	deprecated	gemini/imagen-4.0-fast-generate-001: retires 2026-08-17 (in 5 days)	2026-08-12