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| observed_at | 2026-10-01T05:53:57.268Z |
|---|---|
| origin_date | null |
| status | 200 |
| final URL | https://platform.claude.com/docs/en/about-claude/model-deprecations.md |
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| last-modified | null |
| date | Thu, 01 Oct 2026 05:53:57 GMT |
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@
@@ -66,35 +66,43 @@ At some point, Anthropic hopes to make past models publicly available again. InCurrent and recently retired models are listed in the following table with their status:-
| API model name | Current state | Deprecated | Tentative retirement date |-
| :------------------------- | :------------ | :---------------- | :--------------------------------- |-
| claude-fable-5-1 | Active | N/A | Not sooner than September 1, 2027 |-
| claude-mythos-5-1 | Active | N/A | Not sooner than September 1, 2027 |-
| claude-fable-5 | Active | N/A | Not sooner than June 9, 2027 |-
| claude-mythos-5 | Active | N/A | Not sooner than June 9, 2027 |-
| claude-mythos-preview | Deprecated | June 9, 2026 | To be announced |-
| claude-opus-5-5 | Active | N/A | Not sooner than September 22, 2027 |-
| claude-opus-5 | Active | N/A | Not sooner than July 24, 2027 |-
| claude-opus-4-8 | Active | N/A | Not sooner than May 28, 2027 |-
| claude-opus-4-7 | Active | N/A | Not sooner than April 16, 2027 |-
| claude-opus-4-6 | Active | N/A | Not sooner than February 5, 2027 |-
| claude-opus-4-5-20251101 | Active | N/A | Not sooner than November 24, 2026 |-
| claude-opus-4-1-20250805 | Retired | June 5, 2026 | August 5, 2026 |-
| claude-opus-4-20250514 | Retired | April 14, 2026 | June 15, 2026 |-
| claude-sonnet-5-5 | Active | N/A | Not sooner than September 28, 2027 |-
| claude-sonnet-5 | Active | N/A | Not sooner than June 30, 2027 |-
| claude-sonnet-4-6 | Active | N/A | Not sooner than February 17, 2027 |-
| claude-sonnet-4-5-20250929 | Active | N/A | Not sooner than September 29, 2026 |-
| claude-sonnet-4-20250514 | Retired | April 14, 2026 | June 15, 2026 |-
| claude-3-7-sonnet-20250219 | Retired | October 28, 2025 | February 19, 2026 |-
| claude-haiku-4-5-20251001 | Active | N/A | Not sooner than October 15, 2026 |-
| claude-3-5-haiku-20241022 | Retired | December 19, 2025 | February 19, 2026 |-
| claude-3-haiku-20240307 | Retired | February 19, 2026 | April 20, 2026 |+
| API model name | Current state | Deprecated | Tentative retirement date |+
| :------------------------- | :------------ | :----------------- | :--------------------------------- |+
| claude-fable-5-1 | Active | N/A | Not sooner than September 1, 2027 |+
| claude-mythos-5-1 | Active | N/A | Not sooner than September 1, 2027 |+
| claude-fable-5 | Active | N/A | Not sooner than June 9, 2027 |+
| claude-mythos-5 | Active | N/A | Not sooner than June 9, 2027 |+
| claude-mythos-preview | Deprecated | June 9, 2026 | To be announced |+
| claude-opus-5-5 | Active | N/A | Not sooner than September 22, 2027 |+
| claude-opus-5 | Active | N/A | Not sooner than July 24, 2027 |+
| claude-opus-4-8 | Active | N/A | Not sooner than May 28, 2027 |+
| claude-opus-4-7 | Active | N/A | Not sooner than April 16, 2027 |+
| claude-opus-4-6 | Active | N/A | Not sooner than February 5, 2027 |+
| claude-opus-4-5-20251101 | Active | N/A | Not sooner than November 24, 2026 |+
| claude-opus-4-1-20250805 | Retired | June 5, 2026 | August 5, 2026 |+
| claude-opus-4-20250514 | Retired | April 14, 2026 | June 15, 2026 |+
| claude-sonnet-5-5 | Active | N/A | Not sooner than September 28, 2027 |+
| claude-sonnet-5 | Active | N/A | Not sooner than June 30, 2027 |+
| claude-sonnet-4-6 | Active | N/A | Not sooner than February 17, 2027 |+
| claude-sonnet-4-5-20250929 | Deprecated | September 30, 2026 | November 30, 2026 |+
| claude-sonnet-4-20250514 | Retired | April 14, 2026 | June 15, 2026 |+
| claude-3-7-sonnet-20250219 | Retired | October 28, 2025 | February 19, 2026 |+
| claude-haiku-4-5-20251001 | Active | N/A | Not sooner than October 15, 2026 |+
| claude-3-5-haiku-20241022 | Retired | December 19, 2025 | February 19, 2026 |+
| claude-3-haiku-20240307 | Retired | February 19, 2026 | April 20, 2026 |## Deprecation historyAll deprecations are listed in the following sections, with the most recent announcements first.+
### 2026-09-30: Claude Sonnet 4.5 model+
+
On September 30, 2026, Anthropic notified developers using Claude Sonnet 4.5 of its upcoming retirement on the Claude API.+
+
| Retirement date | Deprecated model | Recommended replacement |+
| ----------------- | ---------------------------- | ----------------------- |+
| November 30, 2026 | `claude-sonnet-4-5-20250929` | `claude-sonnet-5-5` |+
### 2026-06-05: Claude Opus 4.1 model<Note>