Is gpt-5.3-chat-latest deprecated?

Q: Is gpt-5.3-chat-latest deprecated?

Yes — deprecated. Retired 2026-08-10 — 37 days ago. Requests to this identifier are expected to fail. The provider names gpt-5.6-sol as the replacement.

DEPRECATED

Retired 2026-08-10 — 37 days ago. Requests to this identifier are expected to fail. The provider names gpt-5.6-sol as the replacement.

state=dead sunset=2026-08-10 days_remaining=-37 severity=critical sources=docs,litellm evidence_tier=documentation confirmed_by_endpoint=false documented_by_provider=docs replacement=gpt-5.6-sol corroborated=yes divergent_fields=none checked=2026-09-16 03:02Z

openai/gpt-5.3-chat-latest

Vendor: openai. 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
docs	gpt-5.3-chat-latest	—	—	—	—	2026-08-10
litellm	gpt-5.3-chat-latest	128,000	16,384	$1.75	$14	2026-08-10

Change history

Severity	Change	What	Detected
critical	deprecated	gpt-5.3-chat-latest: deprecation announced for 2026-08-10 (date already passed)	2026-08-12
info	deprecated	gpt-5.3-chat-latest: deprecation announced for 2026-05-08 (date already passed)	2026-08-05
critical	deprecated	gpt-5.3-chat-latest: retires 2026-08-10 (in 9 days)	2026-08-01
low	added	new model gpt-5.3-chat-latest	2026-08-01