Anthropic · Claude
Claude Opus 4
RetiredReleased 1 year ago· May 22, 2025Multimodal model
Claude 4 flagship, 'world's best coding model' at launch (72.5% SWE-bench Verified). Guide flagged it retiring June 15, 2026 — treated as retired as of the catalog date. $15/$75 at launch.
- API string
- claude-opus-4-20250514
- Context window
- 200K ctx
- Tier
- Legacy
- Released
- May 22, 2025
Release & change timeline
2 events- Retirement
Claude Opus 4 retired
Guide announced claude-opus-4-20250514 retiring June 15, 2026; model string returns errors after retirement.
- Release
Claude Opus 4 released
Claude 4 flagship; called the world's best coding model at launch.
Part of the Claude version timeline. Catch Me Up — everything that changed across AI & smart home ↗