Is gemini-3.1-flash-lite-preview deprecated?

Q: Is gemini-3.1-flash-lite-preview deprecated?

Yes — deprecated. Retired 2026-05-25 — 114 days ago. Requests to this identifier are expected to fail.

DEPRECATED

Retired 2026-05-25 — 114 days ago. Requests to this identifier are expected to fail.

state=dead sunset=2026-05-25 days_remaining=-114 severity=critical sources=gemini,litellm,openrouter evidence_tier=endpoint confirmed_by_endpoint=gemini documented_by_provider=false replacement=none corroborated=yes divergent_fields=none checked=2026-09-16 03:02Z

google/gemini-3.1-flash-lite-preview

Vendor: google. Tracked by 3 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
gemini native	gemini-3.1-flash-lite-preview	1,048,576	65,536	—	—	—
litellm	gemini/gemini-3.1-flash-lite-preview	1,048,576	65,536	$0.25	$1.5	2026-05-25
openrouter	google/gemini-3.1-flash-lite-preview	1,048,576	65,536	$0.25	$1.5	—

Change history

Severity	Change	What	Detected
info	deprecated	gemini/gemini-3.1-flash-lite-preview: deprecation announced for 2026-05-25 (date already passed)	2026-08-12
info	deprecated	gemini/gemini-3.1-flash-lite-preview: retires 2026-05-25 (79 days ago)	2026-08-12
high	modified	gemini/gemini-3.1-flash-lite-preview: capabilities lost code_execution, file_search, service_tier	2026-06-27
high	modified	openrouter/google/gemini-3.1-flash-lite-preview: capabilities lost code_execution, file_search	2026-06-27
high	modified	gemini-3.1-flash-lite-preview: capabilities lost code_execution, file_search, service_tier	2026-06-27
high	modified	vertex_ai/gemini-3.1-flash-lite-preview: capabilities lost code_execution, file_search	2026-06-27