AI Desk · Model Identity · Evidence object
Tokenizer signature tk_2d06485c
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 Claude group.
- Members
- 1
- First observed
- 21 August 2026
- Last observed
- 21 August 2026
- Group
- Claude
Models with this signature
The measured vector
Marginal prompt-token cost per string, as measured on Anthropic: Claude 3 HaikuAll 50 rows
English and whitespace
en-prose15
en-long17
spaces-204
spaces-606
tabs-204
newlines-203
mixed-ws9
Digits
digits-94
digits-125
digits-3011
digits-sep8
float-long10
CJK
zh-common19
zh-long25
zh-rare21
ja-kana12
ja-kanji17
ko20
Other scripts
ru14
ar21
he18
hi23
th25
el22
Emoji
emoji-basic11
emoji-skin26
emoji-zwj-family15
emoji-zwj-x343
emoji-flags25
emoji-prof28
Rare Unicode
math47
boxdraw29
combining6
cjk-ext-b17
surrogates55
zalgo36
rtl-mix10
Code
py-code30
py-indent19
json23
html17
regex52
camel7
snake11
Repetition and encodings
rare-word-x541
repeat-tok21
base6443
hex14
url22
uuid28
Method: tokenizer fingerprinting, v1-50. Raw data: fingerprints.json · index.json · test-strings.json.