Model and API retirements

Within 30 days64Firm dates ahead558

64 within 30 days · 558 firm dates ahead

Anthropic model and API retirement dates

2 scheduled · next Nov 30, 2026 · 40 recorded · Claude API, Anthropic

Calendar

Retirements

Next 30 days

Claude APIModelUnverified

claude-sonnet-4-5-20250929

Stops answering on Claude API; use claude-sonnet-5-5 instead.

in 21 daysNov 30
AnthropicModelUnverified

Fast mode for Claude Opus 4.8

Stops answering on Anthropic.

in 21 daysNov 30

Earliest dates (not sooner than)

Claude APIModel

claude-opus-4-5-20251101

Stops answering on Claude API no sooner than Nov 24, 2026.

not sooner thanNov 24
Claude APIModel

claude-opus-4-6

Stops answering on Claude API no sooner than Feb 5, 2027.

not sooner thanFeb 5, 2027
Claude APIModel

claude-sonnet-4-6

Stops answering on Claude API no sooner than Feb 17, 2027.

not sooner thanFeb 17, 2027
Claude APIModel

claude-opus-4-7

Stops answering on Claude API no sooner than Apr 16, 2027.

not sooner thanApr 16, 2027
Claude APIModel

claude-opus-4-8

Stops answering on Claude API no sooner than May 28, 2027.

not sooner thanMay 28, 2027
Claude APIModel

claude-fable-5

Stops answering on Claude API no sooner than Jun 9, 2027.

not sooner thanJun 9, 2027
Claude APIModel

claude-mythos-5

Stops answering on Claude API no sooner than Jun 9, 2027.

not sooner thanJun 9, 2027
Claude APIModel

claude-sonnet-5

Stops answering on Claude API no sooner than Jun 30, 2027.

not sooner thanJun 30, 2027
Claude APIModel

claude-opus-5

Stops answering on Claude API no sooner than Jul 24, 2027.

not sooner thanJul 24, 2027
Claude APIModel

claude-fable-5-1

Stops answering on Claude API no sooner than Sep 1, 2027.

not sooner thanSep 1, 2027
Claude APIModel

claude-mythos-5-1

Stops answering on Claude API no sooner than Sep 1, 2027.

not sooner thanSep 1, 2027
Claude APIModel

claude-opus-5-5

Stops answering on Claude API no sooner than Sep 22, 2027.

not sooner thanSep 22, 2027
Claude APIModelUnverified

claude-sonnet-5-5

Stops answering on Claude API no sooner than Sep 28, 2027.

not sooner thanSep 28, 2027
Claude APIModelUnverified

claude-haiku-5-5

Stops answering on Claude API no sooner than Oct 7, 2027.

not sooner thanOct 7, 2027

Recently retired

Claude APIModel

claude-haiku-4-5-20251001

Stopped answering on Claude API.

not sooner thanOct 15
Claude APIModel

claude-sonnet-4-5-20250929

Stopped answering on Claude API.

not sooner thanSep 29
AnthropicModelUnverified

Claude experimental prompt tools AP

Stopped answering on Anthropic.

retiredAug 17
AnthropicModelUnverified

Legacy Claude Console Workbench sunsets

Stopped answering on Anthropic.

retiredAug 17
Claude APIModel

claude-opus-4-1-20250805

Stopped answering on Claude API.

retiredAug 5
AnthropicModelUnverified

Fast mode for Claude Opus 4.7 deprecated, removal

Stopped answering on Anthropic.

retiredJul 24
Claude APIModel

claude-opus-4-20250514

Stopped answering on Claude API.

retiredJun 15
Claude APIModel

claude-sonnet-4-20250514

Stopped answering on Claude API.

retiredJun 15

Changes

Mon, Nov 2

AnthropicAnnouncedUnverified

Fast mode for Claude Opus 4.8

Anthropic lists Fast mode for Claude Opus 4.8 to retire on Nov 30, 2026.

Source

Sat, Oct 10

AnthropicReplacementUnverified

claude-3-sonnet-20240229

Anthropic changed the replacement for claude-3-sonnet-20240229 from claude-sonnet-4-6 to claude-sonnet-5-5.

Source
AnthropicReplacementUnverified

claude-3-5-sonnet-20241022

Anthropic changed the replacement for claude-3-5-sonnet-20241022 from claude-sonnet-4-6 to claude-sonnet-5-5.

Source
AnthropicReplacementUnverified

claude-3-5-sonnet-20240620

Anthropic changed the replacement for claude-3-5-sonnet-20240620 from claude-sonnet-4-6 to claude-sonnet-5-5.

Source
AnthropicReplacementUnverified

claude-3-7-sonnet-20250219

Anthropic changed the replacement for claude-3-7-sonnet-20250219 from claude-sonnet-4-6 to claude-sonnet-5-5.

Source
AnthropicReplacementUnverified

claude-sonnet-4-20250514

Anthropic changed the replacement for claude-sonnet-4-20250514 from claude-sonnet-4-6 to claude-sonnet-5-5.

Source
AnthropicAnnouncedUnverified

claude-haiku-5-5

Anthropic lists claude-haiku-5-5 on Claude API to retire no sooner than Oct 7, 2027.

Source

Mon, Oct 5

AnthropicAnnouncedUnverified

claude-sonnet-4-5-20250929

Anthropic lists claude-sonnet-4-5-20250929 on Claude API to retire on Nov 30, 2026.

Source
AnthropicAnnouncedUnverified

claude-sonnet-5-5

Anthropic lists claude-sonnet-5-5 on Claude API to retire no sooner than Sep 28, 2027.

Source

Fri, Sep 25

AnthropicAnnouncedUnverified

Fast mode for Claude Opus 4.7 deprecated, removal

Anthropic lists Fast mode for Claude Opus 4.7 deprecated, removal to retire on Jul 24, 2026.

Source
AnthropicAnnouncedUnverified

Legacy Claude Console Workbench sunsets

Anthropic lists Legacy Claude Console Workbench sunsets to retire on Aug 17, 2026.

Source
AnthropicAnnouncedUnverified

Claude experimental prompt tools AP

Anthropic lists Claude experimental prompt tools AP to retire on Aug 17, 2026.

Source
About Anthropic's dates

Read from platform.claude.com/docs/en/about-claude/model-deprecations and the other pages for Claude API, Anthropic. Calendar feed: sunsets.fru.dev/vendors/anthropic.ics.