# Qwen3.8 (27B)

> Dense 27B native vision-language model with a 64-layer Gated DeltaNet and Gated Attention language backbone; the figure omits the vision encoder and MTP head.

| Property | Value |
| --- | --- |
| Lab | Alibaba Cloud (China) |
| Released | 2026-08-14 |
| Decoder type | Dense hybrid |
| Family | Dense hybrid |
| Scale | 27B parameters |
| Context window | 262,144 tokens |
| Attention | 3:1 Gated DeltaNet and Gated Attention |
| Layer mix | 16 gated attention + 48 DeltaNet |
| KV cache / token (bf16) | 64 KiB (Low) |
| License | Apache License 2.0 |

**Key detail:** Uses a 64-layer 3:1 Gated DeltaNet/Gated Attention decoder with partial RoPE and one MTP layer.

## Architecture concepts

- [Hybrid Attention (Hybrid attention)](https://llm-atlas-7or.pages.dev/concepts/hybrid-attention.md): Mixes cheap linear-attention or state-space layers with a few full-attention layers.
- [Grouped-Query Attention (GQA)](https://llm-atlas-7or.pages.dev/concepts/gqa.md): Several query heads share one key/value head, shrinking the KV cache with little quality loss.
- [Gated Attention (Gated attention)](https://llm-atlas-7or.pages.dev/concepts/gated-attention.md): A learned sigmoid gate scales the attention output before it re-enters the residual stream.
- [QK-Norm (QK-Norm)](https://llm-atlas-7or.pages.dev/concepts/qk-norm.md): RMSNorm applied to queries and keys before attention to keep logits well-behaved.
- [Multi-Token Prediction (MTP)](https://llm-atlas-7or.pages.dev/concepts/mtp.md): Extra heads learn to predict several future tokens, and can draft tokens at inference.

## Benchmark (Artificial Analysis Intelligence Index)

- AA Intelligence Index v5.0: total 20.1 (Knowledge Work 39.7, Coding 11.2, Science 1.9, General 27.3)
- AA Intelligence Index v4.3.2: total 33.7 (General 35.9, Scientific 19.7, Coding 26.1, Agents 45.8)

## Links

- Architecture diagram: https://sebastianraschka.com/llm-architecture-gallery/images/architectures/qwen3-8-27b.webp
- config.json: https://huggingface.co/Qwen/Qwen3.8-27B/blob/main/config.json
- License: https://huggingface.co/Qwen/Qwen3.8-27B/blob/main/LICENSE
- Source card (source of truth): https://sebastianraschka.com/llm-architecture-gallery/#card-qwen3-8-27b
- Web page: https://llm-atlas-7or.pages.dev/models/qwen3-8-27b/
- JSON: https://llm-atlas-7or.pages.dev/api/models/qwen3-8-27b.json

_Data from Sebastian Raschka's LLM Architecture Gallery (https://sebastianraschka.com/llm-architecture-gallery/). Synced 2026-11-04._