Family Qwen · 27B parameters

Qwen 3.8 27B

Qwen 3.8 27B: dense multimodal (text + vision), 262k context, ~16 GB Q4 VRAM (18 GB of Ollama weights). Apache 2.0, agentic coding and vision.

🇨🇳 Alibaba·License Apache 2.0·Context 256k tokens·Output 2026-08-14·Tested on the GIGABYTE AI TOP ATOM · our measurements← Catalog

01What it can do

Strengths
  • Apache 2.0 license with no restrictive clause
  • Native vision: images, documents, and videos
  • 262k native context
  • Major improvement on agentic coding vs Qwen 3.6-27B
  • Official Ollama tag + MLX builds for Apple Silicon
Limitations to know
  • —18 GB of model weights in Q4_K_M: 24 GB of VRAM to stay 100% on the GPU
  • —Moderate local throughput (~9–22 tok/s) and a thinking mode that uses a lot of tokens
  • —Manufacturer benchmarks, not independently reproduced
  • —The 1M context requires vLLM/SGLang, inaccessible through Ollama
Architecture
Dense 27B · hybrid attention (64 layers: Gated DeltaNet + Gated Attention) · native vision-language (image and video) · 262,144-token context, expandable to 1M via YaRN
Training
Generation Qwen 3.8 (Alibaba), a dense open-weight variant released on August 14, 2026. Trained with Multi-Token Prediction. “Thinking” mode is enabled by default, with depth adjustable via reasoning_effort.
Ideal for
Agentic codingLocal multimodalLong context

05Install

Install Ollama for your OS. Check the model and its quantization before downloading. Start with 4096 tokens of context, then check placement with ollama ps. A command below is not proof that a test was run on your machine.

$ollama run qwen3.8:27b
⚠
First download: between 2 and 40 GB depending on the selected quantization. Plan for sufficient disk space; a stable connection is recommended. Subsequent launches are instant.

02Required memory

Approximate GPU VRAM required to run this model, including 4k tokens of context overhead. For a longer context, add ~1 GB per 8k-token increment.

Q4_K_M
The lightest, ~5% loss
16 GB
Q5_K_M
Good quality/size compromise
19 GB
Q8_0
Nearly indistinguishable from FP16
29 GB
FP16
Full precision — server use
54 GB
Fallback CPU · If you don't have a GPU, allow 35 GB of RAM minimum to run this model at reduced speed.

What hardware do you need for Qwen 3.8 27B?

To run Qwen 3.8 27B locally with Q4 quantization, you need about 16 GB of VRAM. An option to compare: GMKtec EVO-X2 64GB / 1TB (Ryzen AI Max+ 395) — leave some headroom for the system and context; check engine compatibility with the GPU.

Current offer: GMKtec EVO-X2 64GB / 1TB (Ryzen AI Max+ 395)
AmazonSee price →

Why this choice? Our complete guide on GMKtec EVO-X2 64GB / 1TB (Ryzen AI Max+ 395) →

Affiliate links — commission possible at no extra cost to you; independent recommendation. As an Amazon Associate, BestLLMfor earns from qualifying purchases.

On the go: Qwen 3.8 27B also runs on a RTX laptop PC (16 GB of VRAM) →

03Expected speed

Tokens generated per second in Q4_K_M, 4k context. Beyond 20 t/s, reading is comfortable. Below 10 t/s, that's just for testing.

Entry-level
~9t/s
GTX 1650, RX 6600, MBA M2 8GB
Mid-range
~14t/s
RTX 4060, 4070, MBP M3 Pro
High-end
~22t/s
RTX 4090, M4 Max, Radeon 7900

04Public benchmarks

Scores reproduced from model cards or MMLU-Pro / community sources. Unit: % correct answers.

Terminal Bench 2.1
73
SWE-bench Pro
61.7
LiveCodeBench v6
90.3
GPQA Diamond
89.2
OSWorld-Verified
84.3