Anthropic
Claude Opus 4.8 Releases
Official changelog
Claude Platform release notes - Claude Platform Docs (covers all Anthropic models)
Get an email when we log a new Claude Opus 4.8 release
Questions
When was Claude Opus 4.8 released
May 28, 2026, per platform.claude.com.
Where is the official Claude Opus 4.8 changelog
Claude Platform release notes - Claude Platform Docs, at https://platform.claude.com/docs/en/release-notes/overview.
Source: claude.com, read Nov 9, 2026.