AI Desk · Model Identity · Evidence object
Tokenizer signature tk_f04fd33e
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 Nova · group B group.
- Members
- 1
- First observed
- 21 August 2026
- Last observed
- 21 August 2026
- Group
- Nova · group B
Models with this signature
The measured vector
Marginal prompt-token cost per string, as measured on Amazon: Nova 2 LiteAll 50 rows
English and whitespace
en-prose14
en-long15
spaces-203
spaces-603
tabs-203
newlines-204
mixed-ws6
Digits
digits-93
digits-124
digits-3010
digits-sep7
float-long9
CJK
zh-common12
zh-long16
zh-rare18
ja-kana8
ja-kanji10
ko12
Other scripts
ru11
ar10
he10
hi11
th9
el14
Emoji
emoji-basic10
emoji-skin11
emoji-zwj-family11
emoji-zwj-x333
emoji-flags14
emoji-prof18
Rare Unicode
math25
boxdraw24
combining10
cjk-ext-b16
surrogates32
zalgo34
rtl-mix6
Code
py-code25
py-indent15
json20
html16
regex42
camel6
snake6
Repetition and encodings
rare-word-x530
repeat-tok21
base6431
hex10
url17
uuid27
Method: tokenizer fingerprinting, v1-50. Raw data: fingerprints.json · index.json · test-strings.json.