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Qwen 3.8 27B

ECI#55
152
Alibaba
Aug. 14, 2026
Open weights

Qwen 3.8 27B is an open-weights model from Alibaba, released August 14, 2026. It has an ECI score of 152 and ranks 55th of 254 tracked models. At the time of its release, it ranked 36th of 233 tracked models.

Qwen 3.8 27B vs select alternatives

DomainBenchmark
Qwen 3.8 27B
Alibaba
Aug. 14, 2026
Open weights
Alibaba
Apr. 20, 2026
Closed weights
Alibaba
May 19, 2026
Closed weights
Z.ai (Zhipu AI)
Jun. 16, 2026
Open weights
ECI scoreBest score 169
152149154152
Ranking#55#66#45#53
Agent
APEX-AgentsBest score 87%
62%
n/a
n/a
61%
Conceptual reasoning
LMCABest score 68.3
41.442.544.045.8
ARC-AGI-2Best score 95%
42%
n/a
n/a
23%
ARC-AGI-1Best score 99%
88%
n/a
n/a
77%
DTBenchBest score 99%
88%
87%
92%
94%
Mathematics
ProofBenchBest score 100%
16%
n/a
26%
35%
Science
CritPt v1Best score 36%
5%
n/a
13%
21%
SciCodeBest score 67%
47%
n/a
50%
51%
Software engineering
Text Arena (Coding)Best score 1820
1593147915171593

Model metadata