Frontier Model Atlas

Qwen · Qwen3.8 / Qwen4-Exp

Qwen3.8-Flash-Next

A multimodal ultra-sparse MoE preview of the Qwen4 architecture: a 125B main model, 51B bigram/trigram PLE capacity and a separately published 4B MTP auxiliary parameter pool, with 6B parameters active per token, 48 language blocks repeating 3 × Gated DeltaNet + 1 × Qwen Sparse Attention, and four-branch Gated Residual.

Main125BStored180BActive6.0BLayers48Context256K
Checkpoint architecture · source-backed layout
Model anatomyToken path · block microscope · cost surface
Architecture signature36 Gated DeltaNet · 12 QSA
Gated DeltaNet36 · 75%QSA12 · 25%
Layer blueprintAttention · FFN · residual, aligned by transformer block48 layers
Layer mix
36× Gated DeltaNet · 12× QSA
QSA indexer
4× blocks · 4Q/1K × 128d · top 2,048
PLE N-gram
51B · 2/3-gram · layer 2
FFN schedule
48 learned-routing MoE
Experts / token
10 / 512 routed + 1 shared
Vision tower
27 blocks · 1152d → 2560d
Residual topology
4-stream Gated Residual
Main-model active share
4.8% of main model

Each blueprint column is one transformer block. Hover or keyboard-focus a linked cell to read attention, feed-forward and residual structure as one aligned layer; linked cells open the corresponding walkthrough or inspector. DSA cells additionally preserve whether the layer runs a full indexer or reuses a shared IndexShare selection. QSA cells preserve their per-layer sparse retrieval identity, while PLE is marked on the decoder layer receiving N-gram features. MoE cells preserve any layer-level routing transition encoded by the checkpoint manifest. Structural encoding only — it does not imply benchmark quality, throughput or FLOPs.