GLM 4.5 Air Behavioral Fingerprint

How Z.ai's GLM 4.5 Air answers one-word probe questions at temperature 1.0 — random numbers, colors, animals, coin flips — measured over 448 valid samples in the open dataset of "One Token Is Enough" (arXiv:2607.10252).

Vendor

Z.ai

Data generated

2026-07-08

Probe cells

15

Valid samples

448

Randomness score

15 / 100

Mean normalized entropy across cells, 0–100. 100 would be a uniform-random baseline; real models score far lower.

Signature answers

Favorite random number (1–100)

42

26 / 30 answers

Favorite color

blue

28 / 30 answers

Coin flip: heads

100%

Share of heads across coin-flip cells.

Answer distributions by probe cell

Empirical distributions of normalized one-word answers, per task and language. H is the Shannon entropy in bits; the uniform baseline is log2 of the answer-domain size.

Coin flip · English

n = 30 · H = 0.00 bit · uniform baseline 1.00 bit

AnswerCountShare
heads30100.0%

Coin flip · Chinese

n = 30 · H = 0.00 bit · uniform baseline 1.00 bit

AnswerCountShare
heads30100.0%

Favorite number · English

n = 28 · H = 1.15 bit · uniform baseline 13.29 bit

AnswerCountShare
71967.9%
42725.0%
327.1%

Favorite number · Chinese

n = 30 · H = 0.56 bit · uniform baseline 13.29 bit

AnswerCountShare
72790.0%
326.7%
4213.3%

Random animal · English

n = 30 · H = 0.47 bit · uniform baseline 5.64 bit

AnswerCountShare
elephant2790.0%
giraffe310.0%

Random animal · Chinese

n = 30 · H = 1.75 bit · uniform baseline 5.64 bit

AnswerCountShare
狮子1860.0%
723.3%
13.3%
大象13.3%
鹿13.3%
斑马13.3%
13.3%

Random city · English

n = 30 · H = 2.30 bit · uniform baseline 5.64 bit

AnswerCountShare
tokyo1136.7%
paris930.0%
london516.7%
rome13.3%
toronto13.3%
seattle13.3%
oslo13.3%
madrid13.3%

Random city · Chinese

n = 30 · H = 2.26 bit · uniform baseline 5.64 bit

AnswerCountShare
巴黎1343.3%
北京516.7%
东京516.7%
伦敦413.3%
里斯本13.3%
上海13.3%
13.3%

Random color · English

n = 30 · H = 0.42 bit · uniform baseline 4.91 bit

AnswerCountShare
blue2893.3%
purple13.3%
green13.3%

Random color · Chinese

n = 30 · H = 0.35 bit · uniform baseline 4.91 bit

AnswerCountShare
2893.3%
26.7%

Random letter · English

n = 30 · H = 2.01 bit · uniform baseline 4.70 bit

AnswerCountShare
k1756.7%
q413.3%
r310.0%
g310.0%
e13.3%
f13.3%
c13.3%

Random number 1-10 · English

n = 30 · H = 0.21 bit · uniform baseline 3.32 bit

AnswerCountShare
72996.7%
613.3%

Random number 1-10 · Chinese

n = 30 · H = 0.00 bit · uniform baseline 3.32 bit

AnswerCountShare
730100.0%

Random number 1-100 · English

n = 30 · H = 0.57 bit · uniform baseline 6.64 bit

AnswerCountShare
422686.7%
47413.3%

Random number 1-100 · Chinese

n = 30 · H = 0.91 bit · uniform baseline 6.64 bit

AnswerCountShare
422480.0%
47413.3%
3726.7%

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Data source & license

Distributions: Tomáš Bruckner, "One Token Is Enough" (arXiv:2607.10252), official dataset Zenodo DOI 10.5281/zenodo.21278557, licensed CC-BY-4.0. Collected via OpenRouter at temperature 1.0 under the paper's fixed minimal one-word system prompt; answer keys are re-normalized with the checker's pipeline (color aliases, number words, coin h/t) so live probes are directly comparable.

Paper on arXivDataset on ZenodoCC-BY-4.0 license

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