2 pages for claude-3-opus.
Titles and paths first, then pages whose text carries it. Each row opens that page as this site last read it.
model-deprecations
Claude Developer Platform · in the page
about-claude/model-deprecations
…-------------------- | ----------------------- | | January 5, 2026 | `claude-3-opus-20240229` | `claude-opus-4-8` | ### 2025-01-21: Claude 2, Claude 2.1, and Claude Sonnet 3 models <Note> Th…
overview
Claude Developer Platform · in the page
release-notes/overview
…025). ### January 5, 2026 * We've retired the Claude Opus 3 model (`claude-3-opus-20240229`). All requests to this model will now return an error. We recommend upgrading to [Claude Opus 4.5](https:/…