How much notice does Anthropic give before retiring a model?

Median 63 days from announcement to shutdown across 19 models, ranging from 60 to 189 days. Computed from Anthropic's own published dates.

What replaces the retired Anthropic models?

Replacements are listed where Anthropic publishes one; the source link on each row is the origin.

Where do these dates come from?

Directly from Anthropic's official deprecation documentation, re-fetched weekly. Nothing is estimated: each row links to the page it was read from, and unverified entries are not published.

Anthropic model deprecations — retirement dates and replacements

Re-checked weekly · last verified September 08, 2026

No Anthropic models currently have an announced retirement date. 15 have already been retired.

Which Anthropic models are being retired, and when?

No retirements are currently scheduled.

How much notice does Anthropic give before shutting a model down?

Across 19 Anthropic models where both the announcement and the shutdown date are published, the median gap is 63 days. The range runs from 60 to 189 days, and the tightest case on record is claude-3-haiku-20240307 at 60 days (2026-02-19 → 2026-04-20). That number is not published by Anthropic or anyone else — it is computed here from their own dates, and it is what tells you how much runway a pinned model version really has. Same figure for every provider →

How fast is the Anthropic API once you migrate?

Knowing the shutdown date only solves half the problem. These are our own measurements of the live Anthropic API, so you can see what the endpoint you are migrating to actually costs you in latency, by region:

Region	p50 TTFB	Uptime
Asia (Tokyo)	238 ms	100%
Europe (Germany)	199 ms	100%
South America (São Paulo)	201 ms	100%
US (Central)	93 ms	100%

Edge latency over the last 24 hours. Full Anthropic latency detail →

Which Anthropic models have already been retired?

Model	Retired	Replacement	Source
`claude-opus-4-1-20250805`	2026-08-05	claude-opus-4-8	source
`claude-opus-4-20250514`	2026-06-15	claude-opus-4-8	source
`claude-sonnet-4-20250514`	2026-06-15	claude-sonnet-4-6	source
`claude-3-haiku-20240307`	2026-04-20	claude-haiku-4-5-20251001	source
`claude-3-5-haiku-20241022`	2026-02-19	claude-haiku-4-5-20251001	source
`claude-3-7-sonnet-20250219`	2026-02-19	claude-sonnet-4-6	source
`claude-3-opus-20240229`	2026-01-05	claude-opus-4-8	source
`claude-3-5-sonnet-20240620`	2025-10-28	claude-sonnet-4-6	source
`claude-3-5-sonnet-20241022`	2025-10-28	claude-sonnet-4-6	source
`claude-2.0`	2025-07-21	claude-opus-4-8	source
`claude-2.1`	2025-07-21	claude-opus-4-8	source
`claude-3-sonnet-20240229`	2025-07-21	claude-sonnet-4-6	source
`claude-1.0`	2024-11-06	claude-haiku-4-5-20251001	source
`claude-1.1`	2024-11-06	claude-haiku-4-5-20251001	source
`claude-1.2`	2024-11-06	claude-haiku-4-5-20251001	source

How is this calendar maintained?

A scheduled job re-reads Anthropic’s official deprecation page every week and rewrites this table from it. Entries that cannot be traced to a published source are not shown at all, which is why every row carries a source link. Dates change: providers extend deadlines and occasionally bring them forward, so this page reflects what the vendor documented at the last check, not a prediction.

All providers: full deprecation calendar · Latency data under CC BY 4.0: JSON API