Model summary · Edition 1.0

GPT-5 NanoMedium

These results come from one run: 7 fixed subjects, 5 rounds each, a 50-question limit, and reasoning setting medium. 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 13of 18 models
Question score: 15.49 Lower is better. 95% confidence interval 13.84 to 17.13.
Rounds solved: 33 of 35 0 format errors
Guesser cost per round: $0.0138 Model time 5m 32s.

See how GPT-5 Nano (medium) 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

Albert Einstein: best of 18 models, average 3.80 questions. round 1, round 2, round 3, round 4, round 5
Stephen King: 3rd of 18 models, average 12.00 questions. round 1, round 2, round 3, round 4, round 5

Lowest ranks vs other models

Albert Schweitzer: 17th of 18 models, average 44.40 questions. round 1, round 2, round 3, round 4, round 5
Achilles: 16th of 18 models, average 11.60 questions. round 1, round 2, round 3, round 4, round 5

Single rounds

Fewest questions in a solved round: 2, on Albert Einstein. round 1
Most questions in a solved round: 48, on Albert Schweitzer. round 5
Largest spread between rounds: Albert Schweitzer, from 34 to 51 questions. round 1, round 2, round 3, round 4, round 5
33 wrong guesses in 35 rounds, up to 9 in one round on Albert Schweitzer. round 2

Failed rounds and format errors

Not solved: Albert Schweitzer. Question limit reached after 50 questions; scored as 51. round 1
Not solved: Albert Schweitzer. Question limit reached after 50 questions; scored as 51. round 2

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	3.80	1 of 18	5 of 5	2, 5, 3, 4, 5
Albert Schweitzer	44.40	17 of 18	3 of 5	not solved, not solved, 38, 34, 48
Stephen King	12.00	3 of 18	5 of 5	14, 11, 12, 12, 11
Garfield	15.60	10 of 18	5 of 5	16, 12, 15, 20, 15
Achilles	11.60	16 of 18	5 of 5	21, 11, 8, 7, 11
Genghis Khan	15.60	13 of 18	5 of 5	17, 12, 25, 9, 15
Mario	5.40	7 of 18	5 of 5	6, 6, 5, 5, 5

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-20260728-official-M0003-010, completed 28 Jul 2026.