Deprecations - as of
Claude model deprecations
Anthropic lists 21 deprecated or retired models on its official pages as of Oct 17, 2026: 1 scheduled, 1 deprecated, 19 retired. The next shutdown is claude-sonnet-4-5-20250929 on Nov 30, 2026, replaced by claude-sonnet-5-5.
- Scheduled
- 1
- Deprecated
- 1
- Retired
- 19
- As of
- Oct 17, 2026
Anthropic deprecation policy
Anthropic notifies customers with active deployments of models with upcoming retirements and gives at least 60 days' notice before retiring a publicly released model. Deprecated models still work but are no longer recommended; Anthropic gives them a recommended replacement and a retirement date. Requests to retired models fail. The dates apply to Anthropic-operated platforms (Claude API, Claude Platform on AWS, Microsoft Foundry). Amazon Bedrock and Google Cloud set their own retirement schedules.
Source: Anthropic Claude API on platform.claude.com, read Oct 17, 2026.
Scheduled shutdowns
1 modelsModels with a shutdown date after Oct 17, 2026, soonest first.
| Shutdown | Model | Replacement | Announced | Notes | Source |
|---|---|---|---|---|---|
| in 44 days | claude-sonnet-4-5-20250929Claude Sonnet 4.5 | claude-sonnet-5-5 | -None listed | Source for claude-sonnet-4-5-20250929 on platform.claude.com |
Deprecated, no confirmed shutdown
1 modelsDeprecated with no shutdown date, or with a listed date that has passed while Anthropic still lists the model. See each note.
| Listed date | Model | Replacement | Notes | Source |
|---|---|---|---|---|
| -None listed | claude-mythos-previewClaude Mythos Preview | -None listed | The status table marks it Deprecated as of June 9, 2026 with the retirement date To be announced, and it has no entry in the deprecation history. | Source for claude-mythos-preview on platform.claude.com |
Retired
19 modelsShut down on or before Oct 17, 2026, most recent first.
All 19 retired models
FAQ
Which Claude models shut down next?
As of Oct 17, 2026, 1 Claude model is scheduled to shut down. The earliest dates: Nov 30, 2026: claude-sonnet-4-5-20250929 (replacement claude-sonnet-5-5).
How much notice does Anthropic give before shutting down a model?
Anthropic notifies customers with active deployments of models with upcoming retirements and gives at least 60 days' notice before retiring a publicly released model. Deprecated models still work but are no longer recommended; Anthropic gives them a recommended replacement and a retirement date. Requests to retired models fail. The dates apply to Anthropic-operated platforms (Claude API, Claude Platform on AWS, Microsoft Foundry). Amazon Bedrock and Google Cloud set their own retirement schedules.
How many Claude models have been retired?
This page lists 19 retired Claude models as of Oct 17, 2026. The most recent is claude-opus-4-1-20250805, shut down Aug 5, 2026 with claude-opus-4-8 as the replacement.
Where do these Claude dates come from?
Every row is copied from Anthropic's official pages at platform.claude.com, read on Oct 17, 2026, and links to the page it came from. Policy: https://platform.claude.com/docs/en/about-claude/model-deprecations
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