Retires in 47 days
claude-sonnet-4-5-20250929
Anthropic Claude: retires on 30 Nov 2026 (in 47 days). The recommended replacement is claude-sonnet-5-5.
What to do
Move calls to claude-sonnet-5-5 and test them before 30 Nov 2026, when calls to claude-sonnet-4-5-20250929 stop working.
Recommended replacement claude-sonnet-5-5Deprecated too, with no retirement date yet47
Days until retirement · 30 Nov 2026
30 SepRetirement announced · 61 days' notice
Other Anthropic Claude models retiring
Shutdown dates and recommended replacements, as the providers publish themNo provider has announced a shutdown date that is still ahead.
1 retired in the last 90 days
| claude-opus-4-1-20250805 | 5 Aug 2026 (70d ago) | claude-opus-4-8 | 5 Jun 2026 |
|---|
16 models with no announced retirement date
| claude-fable-5 | Active · retires not before 9 Jun 2027 | — | — |
|---|---|---|---|
| claude-fable-5-1 | Active · retires not before 1 Sep 2027 | — | — |
| claude-haiku-4-5-20251001 | Active · retires not before 15 Oct 2026 | — | — |
| claude-haiku-5-5 | Active · retires not before 7 Oct 2027 | — | — |
| claude-mythos-5 | Active · retires not before 9 Jun 2027 | — | — |
| claude-mythos-5-1 | Active · retires not before 1 Sep 2027 | — | — |
| claude-mythos-preview | Deprecated · retirement date not announced | — | — |
| claude-opus-4-5-20251101 | Active · retires not before 24 Nov 2026 | — | — |
| claude-opus-4-6 | Active · retires not before 5 Feb 2027 | — | — |
| claude-opus-4-7 | Active · retires not before 16 Apr 2027 | — | — |
| claude-opus-4-8 | Active · retires not before 28 May 2027 | — | — |
| claude-opus-5 | Active · retires not before 24 Jul 2027 | — | — |
| claude-opus-5-5 | Active · retires not before 22 Sep 2027 | — | — |
| claude-sonnet-4-6 | Active · retires not before 17 Feb 2027 | — | — |
| claude-sonnet-5 | Active · retires not before 30 Jun 2027 | — | — |
| claude-sonnet-5-5 | Active · retires not before 28 Sep 2027 | — | — |
What changed
First observed 14 Oct 2026No field changes in the recorded history.
Cite this recorded revision to keep the same title, summary, facts and links when the page changes.
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Keep track
- Add the retirement to your calendar: one event on 30 Nov 2026, with a reminder 30 days before.
- Anthropic Claude RSS feed: new releases, known issues, retirements and roadmap changes.
- Everything about Anthropic Claude: its timeline, notices, roadmap and other lines.