All 59 named, citable benchmarks reported across Anthropic's four most recent Claude system cards — Fable 5.1 & Mythos 5.1, Opus 5, Sonnet 5, and Haiku 4.5. Each one is broken down the same five ways: what it's for, how it was built, how it's run, how it's scored, and how to read the score — every claim traced to the card's own text, and every gap in that text named rather than filled in.