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Qwen: Qwen3 235B A22B Thinking 2507

qwen/qwen3-235b-a22b-thinking-2507 · Alibaba (Qwen)Declared and measured agree
Tokenizer lineage (measured)
Qwen
Evidence confidence
High
Why high: an exact fingerprint shared with 26 models that declare the same family, without a second signal of a different kind yet.
Declared tokenizer tag
Qwen3
Entered catalogue
25 July 2025
Last tested
21 August 2026
Measurement
Measured
Evidence
  • ✓ exact tokenizer signature shared with 26 models
Compare with Qwen: Qwen3 Coder Next

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Identity statement

Qwen: Qwen3 235B A22B Thinking 2507 is Alibaba (Qwen)'s model. Its measured tokenizer sits with the Qwen group, which is evidence that it builds on the Qwen tokenizer. Tokenizer reuse is normal engineering, open vocabularies travel between labs, and this says nothing against Alibaba (Qwen)'s authorship of the model itself.

Evidence stack

Signals of different kinds, weighed together
SignalResultReference
Tokenizer signatureExact match with 26 other modelstk_5410b38e
API surfaceNo other entry shares this exact contractapi_e4f161f2
Context and output262,144 context · – max outputdeclared
Reasoning contractMandatorydeclared
Serving providers observedNovitameasured 21 August 2026

Shares this fingerprint

Exact signature first; template-boundary shifts of the same signature beneath
ByteDance: UI-TARS 7B bytedance/ui-tars-1.5-7bexact · 50/50Dots Studio: Dots3-Note Preview (free)dots-studio/dots-3-note-preview:freeexact · 50/50Qwen2.5 72B Instructqwen/qwen-2.5-72b-instructexact · 50/50Qwen: Qwen2.5 7B Instructqwen/qwen-2.5-7b-instructexact · 50/50Qwen: Qwen-Plusqwen/qwen-plusexact · 50/50Qwen: Qwen Plus 0728qwen/qwen-plus-2025-07-28exact · 50/50Qwen: Qwen3 14Bqwen/qwen3-14bexact · 50/50Qwen: Qwen3 235B A22B Instruct 2507qwen/qwen3-235b-a22b-2507exact · 50/50Qwen: Qwen3 30B A3Bqwen/qwen3-30b-a3bexact · 50/50Qwen: Qwen3 30B A3B Instruct 2507qwen/qwen3-30b-a3b-instruct-2507exact · 50/50Qwen: Qwen3 30B A3B Thinking 2507qwen/qwen3-30b-a3b-thinking-2507exact · 50/50Qwen: Qwen3 32Bqwen/qwen3-32bexact · 50/50Qwen: Qwen3 8Bqwen/qwen3-8bexact · 50/50Qwen: Qwen3 Coder 480B A35Bqwen/qwen3-coderexact · 50/50Qwen: Qwen3 Coder 30B A3B Instructqwen/qwen3-coder-30b-a3b-instructexact · 50/50Qwen: Qwen3 Coder Flashqwen/qwen3-coder-flashexact · 50/50Qwen: Qwen3 Coder Nextqwen/qwen3-coder-nextexact · 50/50Qwen: Qwen3 Next 80B A3B Instructqwen/qwen3-next-80b-a3b-instructexact · 50/50Qwen: Qwen3 Next 80B A3B Thinkingqwen/qwen3-next-80b-a3b-thinkingexact · 50/50Qwen: Qwen3 VL 235B A22B Instructqwen/qwen3-vl-235b-a22b-instructexact · 50/50Qwen: Qwen3 VL 30B A3B Instructqwen/qwen3-vl-30b-a3b-instructexact · 50/50Qwen: Qwen3 VL 30B A3B Thinkingqwen/qwen3-vl-30b-a3b-thinkingexact · 50/50Qwen: Qwen3 VL 32B Instructqwen/qwen3-vl-32b-instructexact · 50/50Qwen: Qwen3 VL 8B Instructqwen/qwen3-vl-8b-instructexact · 50/50Qwen: Qwen3 VL 8B Thinkingqwen/qwen3-vl-8b-thinkingexact · 50/50Xiaomi: MiMo-V2.5xiaomi/mimo-v2.5exact · 50/50

Closest measured models

Agreement across the mutually clean test strings
Xiaomi: MiMo-V2.5xiaomi/mimo-v2.550/50 · 100%Dots Studio: Dots3-Note Preview (free)dots-studio/dots-3-note-preview:free50/50 · 100%Qwen: Qwen3 30B A3B Instruct 2507qwen/qwen3-30b-a3b-instruct-250750/50 · 100%Qwen: Qwen3 Coder 30B A3B Instructqwen/qwen3-coder-30b-a3b-instruct50/50 · 100%Qwen: Qwen3 32Bqwen/qwen3-32b50/50 · 100%ByteDance: UI-TARS 7B bytedance/ui-tars-1.5-7b50/50 · 100%

Click a row to open the full comparison.

The measured fingerprint

Marginal prompt-token cost of each test string, grouped by script
All 50 rows

English and whitespace

en-prose14
en-long16
spaces-203
spaces-603
tabs-203
newlines-204
mixed-ws5

Digits

digits-99
digits-1212
digits-3030
digits-sep12
float-long22

CJK

zh-common10
zh-long12
zh-rare17
ja-kana8
ja-kanji13
ko17

Other scripts

ru16
ar8
he9
hi29
th12
el28

Emoji

emoji-basic5
emoji-skin10
emoji-zwj-family10
emoji-zwj-x330
emoji-flags8
emoji-prof14

Rare Unicode

math26
boxdraw17
combining5
cjk-ext-b12
surrogates22
zalgo36
rtl-mix7

Code

py-code25
py-indent15
json25
html16
regex44
camel5
snake6

Repetition and encodings

rare-word-x531
repeat-tok22
base6436
hex17
url19
uuid36

An x marks a row excluded as corrupt (caching or provider interference detected during measurement). Overhead subtracted: 9 prompt tokens.

Declared record

What the catalogue claims about this model

Qwen3-235B-A22B-Thinking-2507 is a high-performance, open-weight Mixture-of-Experts (MoE) language model optimized for complex reasoning tasks. It activates 22B of its 235B parameters per forward pass and natively supports up to 262,144...

Modalities
text->text
Declared tokenizer
Qwen3
Prompt price
$0.23 / M tokens
Completion price
$2.30 / M tokens

Supported parameters

frequency_penaltyinclude_reasoninglogit_biaslogprobsmax_tokensmin_ppresence_penaltyreasoningrepetition_penaltyresponse_formatseedstoptemperaturetool_choicetoolstop_ktop_logprobstop_p

defaults: {"temperature":null,"top_p":null,"frequency_penalty":null}

Catalogue entryWeights on Hugging Face

History

Every observation, kept as taken
  • 25 July 2025Enters the OpenRouter catalogue declared as Qwen3.
  • 21 August 2026Fingerprinted in the YFarmX catalogue sweep · 50 of 50 strings measured clean.
  • 21 August 2026YFarmX assessment: consistent with the Qwen family, high confidence.

Cite this page as the evidence record for Qwen: Qwen3 235B A22B Thinking 2507: the URL is stable, measurements are dated, and revisions append to the history above. Method: tokenizer fingerprinting, v1, 50 strings. The raw data behind every figure is on the data page.