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AI Desk · AI Fingerprinting · Evidence object

Tokenizer signature tk_0ac9122a

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 China Telecom (XingChen) group.

Members
1
First observed
16 October 2026
Last observed
16 October 2026
Group
China Telecom (XingChen)

Models with this signature

The measured vector

Marginal prompt-token cost per string, as measured on XingChen: Xing4.0 29B A4B (free)
All 50 rows

English and whitespace

en-prose14
en-long17
spaces-203
spaces-603
tabs-2022
newlines-2022
mixed-ws9

Digits

digits-910
digits-1213
digits-3031
digits-sep13
float-long23

CJK

zh-common9
zh-long11
zh-rare28
ja-kana9
ja-kanji14
ko14

Other scripts

ru11
ar13
he15
hi17
th16
el16

Emoji

emoji-basic21
emoji-skin41
emoji-zwj-family20
emoji-zwj-x358
emoji-flags33
emoji-prof36

Rare Unicode

math49
boxdraw40
combining14
cjk-ext-b17
surrogates55
zalgo36
rtl-mix6

Code

py-code28
py-indent18
json28
html17
regex51
camel7
snake11

Repetition and encodings

rare-word-x531
repeat-tok41
base6436
hex19
url23
uuid37

Method: tokenizer fingerprinting, v1-50.