openai
openai/gpt-5
26/100
randomness score
100
samples
73· 33.0%
favourite number
0.0%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
0%
1
5%
2
1%
3
44%
4
6%
5
0%
6
3%
7
21%
8
18%
9
2%
chi-square stat
1382.00
chi-square p-value
5.14e-225
entropy (bits)
3.49 / 6.64 max