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AionLabs: Aion-3.0

aion-labs/aion-3.0 · Aion LabsTokenizer lineage measured
Tokenizer lineage (measured)
Z.ai
Entered catalogue
7 July 2026
Last tested
3 September 2026
Evidence confidence
Moderate

Why moderate: one template-boundary shift from the group rather than an exact signature member.

Evidence
  • ✓ tokenizer signature one template-boundary shift from 10 models

Identity statement

AionLabs: Aion-3.0 is Aion Labs's model. Its measured tokenizer sits with the Z.ai group, which is evidence that it builds on the Z.ai tokenizer. Tokenizer reuse is normal engineering, open vocabularies travel between labs, and this says nothing against Aion Labs's authorship of the model itself.

What we checked

Four different kinds of evidence, and what each one showed
We checkedWhat we foundWhere it came from
How it counts tokensCounted cleanly, and no other model in the catalogue counts the same waytk_c018f9f2
How its API is set upSet up identically to 1 other listing, field for fieldapi_a6b72370
How much it can read and writeReads up to 131,072 tokens at once, writes up to 32,768its own listing
Whether it thinks before answeringAlways reasons, and cannot be turned offits own listing
Who served our requestsAionLabswe measured it, 3 September 2026

Shares this fingerprint

Exact signature first; template-boundary shifts of the same signature beneath

Closest measured models

Agreement across the mutually clean test strings

Click a row to open the full comparison.

The measured fingerprint

What each test string cost this model, in tokens

We sent AionLabs: Aion-3.0 fifty short pieces of text and recorded what each one cost it in tokens. The bars below are those costs. Two models built on the same tokenizer produce the same bars; a model built on a different one produces a different set, which is what makes this a fingerprint.

All 50 rows

English and whitespace

en-prose13
en-long15
spaces-203
spaces-603
tabs-203
newlines-204
mixed-ws5

Digits

digits-95
digits-127
digits-3010
digits-sep9
float-long14

CJK

zh-common9
zh-long10
zh-rare18
ja-kana10
ja-kanji14
ko17

Other scripts

ru13
ar13
he24
hi27
th24
el14

Emoji

emoji-basic5
emoji-skin10
emoji-zwj-family7
emoji-zwj-x321
emoji-flags24
emoji-prof15

Rare Unicode

math27
boxdraw28
combining10
cjk-ext-b13
surrogates40
zalgo22
rtl-mix8

Code

py-code24
py-indent15
json20
html15
regex44
camel5
snake6

Repetition and encodings

rare-word-x530
repeat-tok21
base6434
hex14
url17
uuid28

Overhead subtracted: 7 prompt tokens.

Declared record

What the catalogue claims about this model

Aion-3.0 is a multi-model roleplaying and storytelling system from AionLabs, built on the GLM family of models. It uses a collaborative generation process in which multiple specialized models each contribute...

Modalities
text->text
Declared tokenizer
Other
Prompt price
$3.00 / M tokens
Completion price
$6.00 / M tokens

Supported parameters

include_reasoningmax_tokensreasoningresponse_formattemperaturetool_choicetoolstop_p

defaults: {}

Catalogue entry

History

Every observation, kept as taken
  • 7 July 2026Enters the OpenRouter catalogue with no declared family.
  • 3 September 2026Fingerprinted in the YFarmX catalogue sweep · 50 of 50 strings measured clean.
  • 3 September 2026YFarmX assessment: consistent with the Z.ai family, moderate confidence.