Is claude-opus-4.1 deprecated?

Q: Is claude-opus-4.1 deprecated?

No — still supported. Listed by litellm, openrouter. No retirement date announced. Neither the provider's API nor its documentation has been checked for this model.

NOT DEPRECATED

Listed by litellm, openrouter. No retirement date announced. Neither the provider's API nor its documentation has been checked for this model.

state=alive sunset=none days_remaining=n/a severity=low sources=litellm,openrouter evidence_tier=catalog confirmed_by_endpoint=false documented_by_provider=false replacement=none corroborated=yes divergent_fields=none checked=2026-09-30 15:40Z

anthropic/claude-opus-4.1

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
litellm	openrouter/anthropic/claude-opus-4.1	200,000	32,000	$15	$75	—
openrouter	anthropic/claude-opus-4.1	200,000	32,000	$15	$75	—

Change history

Severity	Change	What	Detected
low	modified	openrouter/anthropic/claude-opus-4.1: capabilities gained web_search	2026-09-19
low	modified	openrouter/anthropic/claude-opus-4.1: capabilities gained pdf_input	2026-09-18
high	modified	anthropic/claude-opus-4.1: capabilities lost max_completion_tokens, response_format, structured_outputs	2026-08-06