Sunsetsby Glyphclaude-opus-4-5-20251101 retirement date and replacement
Claude API · Model · not sooner than Nov 24, 2026
Dates
Checked Nov 9, 2026 on Anthropic's page| Not sooner than | Nov 24, 2026 (not sooner than)The earliest date the vendor gives for a current model; the real date is announced later. |
|---|---|
| Replacement | None named |
| Model page | claude-opus-4-5 on Models |
| What it is | claude-opus-4-5-20251101 stops answering on Claude API no sooner than Nov 24, 2026. |
| Source | platform.claude.com/docs/en/about-claude/model-deprecations |
Around the same time on Claude API
Anthropicnot sooner thanOct 15
Claude APIModelUnverified
claude-sonnet-4-5-20250929
Stops answering on Claude API; use claude-sonnet-5-5 instead.
in 21 daysNov 30