Qwen 3.8 27B | Epoch AI

ECI

N/A

Alibaba

Aug. 14, 2026

Open weights

Qwen 3.8 27B is an open-weights model from Alibaba, released August 14, 2026.

Qwen 3.8 27B vs select alternatives

Domain	Benchmark	Qwen 3.8 27B Alibaba Aug. 14, 2026 Open weights	Claude Fable 5 Anthropic Jun. 9, 2026 Closed weights	GPT-5.5 Pro OpenAI Apr. 23, 2026 Closed weights	Kimi K3 Moonshot Jul. 16, 2026 Open weights
Mathematics	ProofBenchBest score 100%	16%	95%	n/a	87%
Science	CritPtBest score 32%	5%	29%	31%	23%
	SciCodeBest score 62%	45%	60%	n/a	59%
	Surface Evolver BenchBest score 95%	45%	95%	n/a	95%
Software engineering	Text Arena (Coding)Best score 1797	1595	1626	—	1674

Model metadata

General
Organization	Alibaba
Release date	Aug. 14, 2026
Model accessibility	Open weights
Country	China
Knowledge cutoff	Unknown
Provider notes	Qwen X post on 2026/08/14

Pricing
Input price	$0.425 / 1M tokens
Output price	$2.55 / 1M tokens

Training
Parameters	2.7e10
Training compute	Unknown
Training hardware	Unknown
Training time	Unknown
Training dataset size	Unknown