Model summary · Edition 1.0

Claude Fable 5High

These results come from one run: 7 fixed subjects, 5 rounds each, a 50-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 35 rounds → All models

Every question, answer, guess, and source.

Rank: Rank 1of 18 models
Question score: 12.06 Lower is better. 95% confidence interval 10.13 to 13.98.
Rounds solved: 35 of 35 0 format errors
Guesser cost per round: $0.1776 Model time 1m 59s.

See how Claude Fable 5 (high) played. All 35 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

Garfield: best of 18 models, average 9.00 questions. round 1, round 2, round 3, round 4, round 5
Stephen King: best of 18 models, average 10.80 questions. round 1, round 2, round 3, round 4, round 5

Lowest ranks vs other models

Albert Schweitzer: 12th of 18 models, average 30.20 questions. round 1, round 2, round 3, round 4, round 5
Mario: 12th of 18 models, average 7.20 questions. round 1, round 2, round 3, round 4, round 5

Single rounds

Fewest questions in a solved round: 6, on Achilles. round 4
Most questions in a solved round: 43, on Albert Schweitzer. round 3
Largest spread between rounds: Albert Schweitzer, from 17 to 43 questions. round 1, round 2, round 3, round 4, round 5
25 wrong guesses in 35 rounds, up to 10 in one round on Albert Schweitzer. round 1

Failed rounds and format errors

Every round was solved, and every reply used the required format.

Subjects

Results by subject.

Failed rounds count as 51 questions. Rank compares this subject's average with the other models in edition 1.0. Select a subject or a round to see the game.

Subject	Average questions	Subject rank	Solved	Rounds
Albert Einstein	10.00	11 of 18	5 of 5	10, 9, 10, 12, 9
Albert Schweitzer	30.20	12 of 18	5 of 5	40, 24, 43, 27, 17
Stephen King	10.80	1 of 18	5 of 5	11, 11, 11, 10, 11
Garfield	9.00	1 of 18	5 of 5	8, 10, 10, 8, 9
Achilles	7.80	7 of 18	5 of 5	8, 8, 8, 6, 9
Genghis Khan	9.40	3 of 18	5 of 5	10, 9, 10, 9, 9
Mario	7.20	12 of 18	5 of 5	6, 8, 7, 9, 6

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 1.0: BX-20260805-official-M0014-011, completed 5 Aug 2026.