system

/dev/urandom (cryptographic baseline)

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system/dev-urandom
50/100
randomness score
200
samples
33· 4.0%
favourite number
10.0%vs 10% exp.
round numbers
001

distribution

1..100 · normalized

How often this model picks each number from 1 to 100. A truly random generator would draw a flat 1% line across the chart (shown in cyan). Tall amber bars are the model's favourites — numbers that contain the digit “7” are highlighted because LLMs systematically over-pick them.

expected uniform · 1.0%
1255075100
002

last digit bias

uniform = 10% each

The last digit (0..9) of every picked number. In a uniform 1–100 draw each digit would appear roughly 10% of the time. Most LLMs dramatically over-pick “7” and avoid 0 and 5.

0
10%
1
13%
2
6%
3
11%
4
10%
5
11%
6
12%
7
11%
8
9%
9
9%
chi-square stat
120.00
chi-square p-value
7.42e-2
entropy (bits)
6.17 / 6.64 max