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#SubjectTypeTestEffortRunsMeanSpreadDistributionLatest
1▸ claude-opus-5LLMBooklet Ahigh387.4%
39.3/45
±1
87–89%
██████████░░2026-08-10
2▸ claude-fable-5LLMBooklet Amax485%
38.3/45
±2.4
82–89%
██████████░░2026-08-12
3▸ claude-sonnet-5LLMBooklet Amax367.4%
30.3/45
±1
67–69%
████████░░░░2026-08-13
4▸ claude-opus-5LLMBooklet Alow366.7%
30/45
±4.8
60–71%
████████░░░░2026-08-11
5▸ claude-fable-5LLMBooklet Alow360%
27/45
±4.8
56–67%
███████░░░░░2026-08-10
Each row is the mean of that subject’s sittings at one effort on one test, with the standard deviation and the range across those sittings. Chance on a 6-alternative forced choice is 17% — roughly 8/45. A score near that is indistinguishable from guessing.