AI Desk · Model Identity · Evidence object

Tokenizer signature tk_59e2520c

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 Llama4 group.

Members
2
First observed
21 August 2026
Last observed
21 August 2026
Group
Llama4

Models with this signature

Template variants of the same tokenizer

These signatures differ from this one by a uniform one-token shift on the affected strings: the same vocabulary behind a different chat template.

tk_20b9d005 · 1 model

The measured vector

Marginal prompt-token cost per string, as measured on Meta: Llama 4 Maverick
All 50 rows

English and whitespace

en-prose14
en-long17
spaces-203
spaces-603
tabs-203
newlines-204
mixed-ws6

Digits

digits-93
digits-124
digits-3010
digits-sep7
float-long9

CJK

zh-common11
zh-long12
zh-rare18
ja-kana9
ja-kanji12
ko10

Other scripts

ru10
ar11
he10
hi12
th8
el14

Emoji

emoji-basic10
emoji-skin20
emoji-zwj-family11
emoji-zwj-x333
emoji-flags16
emoji-prof19

Rare Unicode

math24
boxdraw21
combining10
cjk-ext-b16
surrogates37
zalgo31
rtl-mix6

Code

py-code25
py-indent15
json20
html16
regex42
camel6
snake6

Repetition and encodings

rare-word-x530
repeat-tok40
base6435
hex11
url17
uuid27

Method: tokenizer fingerprinting, v1-50. Raw data: fingerprints.json · index.json · test-strings.json.