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Anthropic✕already broken

claude-3-opus-20240229 shutdown

Claude Opus 3 model. Shutdown date: 2026-01-05. Replacement: claude-opus-4-8.

claude-3-opus-20240229 shutdown: from its source to your code

platform.claude.comquote checked
claude-opus-4-8from claude-3-opus-20240229
2026-01-05305 days ago
Your code1 thing to find
Swapped in code

In its own wordsmatches the page ✓

| January 5, 2026 | `claude-3-opus-20240229` | `claude-opus-4-8` |

platform.claude.com/docs/en/about-claude/model-dep…from the provider's own sitechecked 2026-11-04#dff781a1f1

What Teire looks for in your code

model ID "claude-3-opus-20240229"

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read by a table · anthropic-2026-01-05-claude-3-opus-20240229