Is claude-opus-5-5 deprecated?

Q: Is claude-opus-5-5 deprecated?

No — still supported. Served by the provider's own endpoint (anthropic). No retirement date announced.

NOT DEPRECATED

Served by the provider's own endpoint (anthropic). No retirement date announced.

state=alive sunset=none days_remaining=n/a severity=low sources=anthropic,litellm evidence_tier=endpoint confirmed_by_endpoint=anthropic documented_by_provider=false replacement=none corroborated=yes divergent_fields=none checked=2026-09-22 21:20Z

anthropic/claude-opus-5-5

Vendor: anthropic. 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
anthropic native	claude-opus-5-5	1,000,000	128,000	—	—	—
litellm	claude-opus-5-5	1,000,000	128,000	$4	$20	—

Change history

Severity	Change	What	Detected
low	added	new model claude-opus-5-5 (1,000,000 ctx)	2026-09-22
low	added	new model claude-opus-5-5 (1,000,000 ctx)	2026-09-22