Qwen: Qwen3.8 27B
qwen/qwen3.8-27b · Alibaba (Qwen)Not yet established- Declared family
- Qwen
- Evidence confidence
- Unknown
- Declared tokenizer tag
- Qwen
- Entered catalogue
- 14 August 2026
- Last tested
- 21 August 2026
- Measurement
- Measured
Identity statement
Qwen: Qwen3.8 27B has a clean measured fingerprint that currently sits alone: no other measured model shares its signature.
Evidence stack
Signals of different kinds, weighed together| Signal | Result | Reference |
|---|---|---|
| Tokenizer signature | Clean measurement; no exact match yet | tk_7a0c4565 |
| API surface | No other entry shares this exact contract | api_cc7880a8 |
| Context and output | 1,000,000 context · 131,072 max output | declared |
| Reasoning contract | Optional · efforts xhigh, medium, low · default xhigh | declared |
| Serving providers observed | Reka, Alibaba, CoreWeave, Io Net, AkashML, Parasail, Venice, Chutes | measured 21 August 2026 |
Closest measured models
Agreement across the mutually clean test stringsQwen: Qwen3.5 Plus 2026-04-20qwen/qwen3.5-plus-2026042025/27 · 93%Qwen: Qwen3.5-122B-A10Bqwen/qwen3.5-122b-a10b44/48 · 92%Nex AGI: Nex-N2-Mininex-agi/nex-n2-mini45/50 · 90%Qwen: Qwen3.7 Flashqwen/qwen3.7-flash45/50 · 90%Qwen: Qwen3.5-Flashqwen/qwen3.5-flash-02-2345/50 · 90%Qwen: Qwen3.5-9Bqwen/qwen3.5-9b45/50 · 90%
Click a row to open the full comparison.
The measured fingerprint
Marginal prompt-token cost of each test string, grouped by scriptAll 50 rows
English and whitespace
en-prose10
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-common9
zh-long10
zh-rare18
ja-kana7
ja-kanji10
ko13
Other scripts
ru12
ar10
he14
hi15
th12
el13
Emoji
emoji-basic9
emoji-skin30
emoji-zwj-family18
emoji-zwj-x350
emoji-flags24
emoji-prof29
Rare Unicode
math29
boxdraw28
combining5
cjk-ext-b13
surrogates36
zalgo36
rtl-mix6
Code
py-code26
py-indent18
json25
html16
regex44
camel5
snake6
Repetition and encodings
rare-word-x530
repeat-tok21
base6436
hex17
url19
uuid32
An x marks a row excluded as corrupt (caching or provider interference detected during measurement). Overhead subtracted: 52 prompt tokens.
Declared record
What the catalogue claims about this modelQwen3.8 27B is an open-weight dense vision-language model from Qwen. It is suited for coding, professional workflows, research, multimodal interaction, and long-running agent tasks, with flexible thinking that can be...
- Modalities
- text+image+video->text
- Declared tokenizer
- Qwen
- Prompt price
- $0.45 / M tokens
- Completion price
- $3.20 / M tokens
Supported parameters
frequency_penaltyinclude_reasoninglogit_biaslogprobsmax_tokenspresence_penaltyreasoningreasoning_effortrepetition_penaltyresponse_formatseedstopstructured_outputstemperaturetool_choicetoolstop_ktop_logprobstop_p
defaults: {"temperature":1,"top_p":0.95,"top_k":20}
History
Every observation, kept as taken- 14 August 2026Enters the OpenRouter catalogue declared as Qwen.
- 21 August 2026Fingerprinted in the YFarmX catalogue sweep · 50 of 50 strings measured clean.
Cite this page as the evidence record for Qwen: Qwen3.8 27B: 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.