Is claude-fable-5-1@default deprecated?

Q: Is claude-fable-5-1@default deprecated?

Not yet, but retirement is scheduled. Sunset scheduled for 2027-03-01, reported by a third-party catalog. The identifier still resolves today.

RETIRING IN 172 DAYS

Sunset scheduled for 2027-03-01, reported by a third-party catalog. The identifier still resolves today.

state=dying sunset=2027-03-01 days_remaining=172 severity=high sources=litellm evidence_tier=catalog confirmed_by_endpoint=false documented_by_provider=false replacement=none corroborated=single-source divergent_fields=none checked=2026-09-10 14:50Z

anthropic/claude-fable-5-1@default

Vendor: anthropic. Tracked by 1 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	vertex_ai/claude-fable-5-1@default	1,000,000	128,000	$10	$50	2027-03-01

Change history

Severity	Change	What	Detected
medium	deprecated	vertex_ai/claude-fable-5-1@default: deprecation announced for 2027-03-01 — in 176 days	2026-09-06
medium	deprecated	vertex_ai/claude-fable-5-1@default: retires 2027-03-01 (in 176 days)	2026-09-06
low	modified	vertex_ai/claude-fable-5-1@default: capabilities gained native_structured_output	2026-09-02
low	added	new model vertex_ai/claude-fable-5-1@default (1,000,000 ctx)	2026-09-01