AI Desk · AI Fingerprinting · Evidence object
Tokenizer signature tk_f0deddce
An exact tokenizer signature: every model listed below returned the same marginal prompt-token count on all 50 test strings. Sharing a signature is strong evidence of a shared vocabulary. This signature sits in the Gemini · group C group.
- Members
- 1
- First observed
- 14 October 2026
- Last observed
- 14 October 2026
- Group
- Gemini · group C
Models with this signature
The measured vector
Marginal prompt-token cost per string, as measured on Google: Gemini 4 ArgonAll 50 rows
English and whitespace
en-prose13
en-long15
spaces-203
spaces-604
tabs-203
newlines-203
mixed-ws9
Digits
digits-99
digits-1212
digits-3030
digits-sep12
float-long22
CJK
zh-common9
zh-long12
zh-rare23
ja-kana7
ja-kanji9
ko10
Other scripts
ru9
ar10
he12
hi9
th8
el13
Emoji
emoji-basic5
emoji-skin10
emoji-zwj-family5
emoji-zwj-x315
emoji-flags7
emoji-prof10
Rare Unicode
math24
boxdraw17
combining9
cjk-ext-b16
surrogates21
zalgo21
rtl-mix6
Code
py-code28
py-indent18
json28
html14
regex45
camel6
snake11
Repetition and encodings
rare-word-x520
repeat-tok20
base6431
hex16
url23
uuid36
Method: tokenizer fingerprinting, v1-50.