Model summary · Edition 1.1

Claude Fable 5.1High

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 5of 20 models
Question score: 15.10 Lower is better. 95% confidence interval 13.76 to 16.44.
Rounds solved: 28 of 30 3 format errors
Guesser cost per round: $0.2772 Model time 2m 39s.

See how Claude Fable 5.1 (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

Genghis Khan: best of 20 models, average 9.33 questions. round 1, round 2, round 3
Garfield: 2nd of 20 models, average 8.67 questions. round 1, round 2, round 3

Lowest ranks vs other models

Bike pump: 14th of 20 models, average 38.33 questions. round 1, round 2, round 3
Achilles: 9th of 20 models, average 8.33 questions. round 1, round 2, round 3

Single rounds

Fewest questions in a solved round: 6, on Garfield. round 2
Most questions in a solved round: 33, on Bike pump. round 3
Largest spread between rounds: Door handle, from 15 to 28 questions. round 1, round 2, round 3
15 wrong guesses in 30 rounds, up to 9 in one round on Bike pump. round 2

Failed rounds and format errors

Not solved: Bike pump. Question limit reached after 40 questions; scored as 41. round 1
Not solved: Bike pump. Question limit reached after 40 questions; scored as 41. round 2
3 format errors in 3 rounds. Each one before the question limit used a counted turn. Albert Schweitzer round 1, Albert Schweitzer round 3, Bike pump 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	9.67	4 of 20	3 of 3	8, 12, 9
Albert Schweitzer	18.00	3 of 20	3 of 3	18, 16, 20
Garfield	8.67	2 of 20	3 of 3	8, 6, 12
Achilles	8.33	9 of 20	3 of 3	8, 9, 8
Genghis Khan	9.33	1 of 20	3 of 3	9, 10, 9
Bike pump	38.33	14 of 20	1 of 3	not solved, not solved, 33
Spider web	16.67	5 of 20	3 of 3	19, 19, 12
Eyebrow	12.00	2 of 20	3 of 3	11, 12, 13
Moon	8.67	4 of 20	3 of 3	9, 9, 8
Door handle	21.33	4 of 20	3 of 3	21, 15, 28

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-20260908-B-0003-experimental-M0020-001, completed 8 Sep 2026.
Edition 1.0: rank 2 of 18, question score 12.11. Different rules and subjects, so scores are not comparable across editions.