claude-sonnet-4-5-20250929 — Active — shutdown Not sooner than September 29, 2026
For claude-sonnet-4-5-20250929, provider is Anthropic; lifecycle status is Active; shutdown / retirement date is Not sooner than September 29, 2026; platform / deployment scope is Anthropic API / Claude Platform on AWS / Microsoft Foundry, recorded from its source on 2026-08-28.
- Provider
- Anthropic our reading
- Model ID / API name
- claude-sonnet-4-5-20250929 verified
- Lifecycle status
- Active verified
- Shutdown / retirement date
- Not sooner than September 29, 2026 verified
- Platform / deployment scope
- Anthropic API / Claude Platform on AWS / Microsoft Foundry our reading
Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.
What the source says
| claude-sonnet-4-5-20250929 | Active | N/A | Not sooner than September 29, 2026 |
— docs.anthropic.com, retrieved 2026-08-28
Sources
- docs.anthropic.comhttps://docs.anthropic.com/en/docs/about-claude/model-deprecations.md
- docs.anthropic.comhttps://docs.anthropic.com/en/docs/about-claude/model-deprecations
This one changes, and we watch it.AI model deprecation and retirement dates by provider is re-read on a schedule and every change is dated. Subscribe: Atom feed · JSON · what has changed so far.