Model summary · Edition 1.1

Claude Opus 5.5High

These results come from one run: 10 fixed subjects, 3 rounds each, a 40-question limit, and reasoning setting high. They do not predict results on other subjects or settings.

This page always shows the model’s newest ranked run.

See all 30 rounds → All models

Every question, answer, guess, and source.

Rank: Rank 4of 20 models
Question score: 15.00 Lower is better. 95% confidence interval 13.24 to 16.76.
Rounds solved: 29 of 30 0 format errors
Guesser cost per round: $0.0751 Model time 1m 17s.

See how Claude Opus 5.5 (high) played. All 30 rounds, with every question, answer, guess, and source.

Observations

What stood out in this run.

Counts and ranks from this run only. A subject rank compares this model’s average on that subject with every other model in this edition. Each item links to its rounds.

Best ranks vs other models

Achilles: best of 20 models, average 7.00 questions. round 1, round 2, round 3
Moon: best of 20 models, average 7.00 questions. round 1, round 2, round 3

Lowest ranks vs other models

Garfield: 12th of 20 models, average 13.33 questions. round 1, round 2, round 3
Spider web: 9th of 20 models, average 18.33 questions. round 1, round 2, round 3

Single rounds

Fewest questions in a solved round: 7, on Achilles. round 1
Most questions in a solved round: 30, on Bike pump. round 2
Largest spread between rounds: Garfield, from 8 to 23 questions. round 1, round 2, round 3
13 wrong guesses in 30 rounds, up to 8 in one round on Bike pump. round 3

Failed rounds and format errors

Not solved: Bike pump. Question limit reached after 40 questions; scored as 41. round 3

Subjects

Results by subject.

Failed rounds count as 41 questions. Rank compares this subject's average with the other models in edition 1.1. Select a subject or a round to see the game.

Subject	Average questions	Subject rank	Solved	Rounds
Albert Einstein	9.00	3 of 20	3 of 3	8, 9, 10
Albert Schweitzer	20.67	8 of 20	3 of 3	20, 23, 19
Garfield	13.33	12 of 20	3 of 3	23, 9, 8
Achilles	7.00	1 of 20	3 of 3	7, 7, 7
Genghis Khan	9.33	1 of 20	3 of 3	9, 9, 10
Bike pump	32.67	8 of 20	2 of 3	27, 30, not solved
Spider web	18.33	9 of 20	3 of 3	19, 15, 21
Eyebrow	9.33	1 of 20	3 of 3	10, 9, 9
Moon	7.00	1 of 20	3 of 3	7, 7, 7
Door handle	23.33	8 of 20	3 of 3	21, 25, 24

Runs

Runs of this model.

Each edition ranks only the newest complete run of a model. Earlier runs are not ranked and their details are not published.

Current run in edition 1.1: BX-20260926-B-0003-official-M0030-001, completed 26 Sep 2026.