# Migrating off claude-3-opus-20240229

**Anthropic** retires **claude-3-opus-20240229** on **2026-01-05**.
Documented replacement: **claude-opus-4-8**.

Source: https://docs.anthropic.com/en/docs/about-claude/model-deprecations
Source check date not recorded.
Calendar as of 2026-09-15 UTC.

| Model | Provider | Retires | Replacement |
|---|---|---|---|
| claude-3-opus-20240229 | Anthropic | 2026-01-05 | claude-opus-4-8 |

Source: https://llmlatency.dev/migrate/anthropic-claude-3-opus-20240229