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

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

Not yet, but retirement is scheduled. Sunset scheduled for 2026-11-17, reported by a third-party catalog. The identifier still resolves today.

RETIRING IN 17 DAYS

Sunset scheduled for 2026-11-17, reported by a third-party catalog. The identifier still resolves today.

state=dying sunset=2026-11-17 days_remaining=17 severity=critical sources=gemini,litellm evidence_tier=endpoint confirmed_by_endpoint=gemini documented_by_provider=false replacement=none corroborated=yes divergent_fields=none checked=2026-10-31 05:09Z

google/gemini-3.1-flash-tts-preview

Vendor: google. Tracked by 2 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-tts-preview	8,192	16,384	—	—	—
litellm	gemini/gemini-3.1-flash-tts-preview	8,192	16,384	$1	$20	2026-11-17

Change history

Severity	Change	What	Detected
high	deprecated	gemini/gemini-3.1-flash-tts-preview: deprecation announced for 2026-11-17 — in 40 days	2026-10-08
high	deprecated	gemini/gemini-3.1-flash-tts-preview: retires 2026-11-17 (in 40 days)	2026-10-08
high	modified	gemini-3.1-flash-tts-preview: capabilities lost thinking	2026-10-06
low	added	new model vertex_ai/gemini-3.1-flash-tts-preview	2026-09-15
low	added	new model gemini/gemini-3.1-flash-tts-preview (8,192 ctx)	2026-08-16