Family
Anthropic
Claude 4 family
12 releases · Elo progression and succession lineage (D9)
Elo progression
May 2025Claude Opus 4CLOSED—1702.9May 2025Claude Sonnet 4CLOSED—1594.8Aug 2025Claude Opus 4.1CLOSED—succeeds Claude Opus 4+57.71760.6Sep 2025Claude Sonnet 4.5CLOSED—succeeds Claude Opus 4.1+216.11976.7Oct 2025Claude Haiku 4.5CLOSED—succeeds Claude Sonnet 4.5-385.91590.8Nov 2025Claude Opus 4.5CLOSED—succeeds Claude Haiku 4.5+683.72274.5Nov 2025Claude Opus 4.5 (High)CLOSED—succeeds Claude Haiku 4.5+710.22301.0Nov 2025Claude Opus 4.5 (Medium)CLOSED—succeeds Claude Haiku 4.52283.3Feb 2026Claude Opus 4.6CLOSED—succeeds Claude Opus 4.5+184.92459.4Feb 2026Claude Sonnet 4.6CLOSED—succeeds Claude Opus 4.6-21.62437.8Apr 2026Claude Opus 4.7CLOSED—succeeds Claude Sonnet 4.6+264.22702.0May 2026Claude Opus 4.8CLOSED—succeeds Claude Opus 4.7+92.32794.3