ModelClock
Shutdown scheduled57 days left
Shuts down on Nov 30, 2026
Anthropic lists November 30, 2026 as the shutdown date. Listed model identifier.
- Hosting route
- First-party API
- Affected scope
- Listed model identifier
- Replacement
- claude-sonnet-5-5
- Announced
- Sep 30, 2026
- First seen by ModelClock
- Oct 3, 2026
What the provider published
platform.claude.com ↗| November 30, 2026 |
claude-sonnet-4-5-20250929|claude-sonnet-5-5|
Read from the provider's table: each value comes from its row, with the row's scope kept.
Also published on platform.claude.com