QWEN/3.8MAX
NOMINAL/v3.8.0-prev/SG-1

ALIBABA CLOUD · MODEL STUDIO — FRONTIER SERIES

QWEN 3.8MAX

The largest Qwen ever built. A million-token mind that reasons in long chains, writes and runs its own code, and works the tools around it — measured, not marketed.

SCROLL — 06 SECTIONS
01EVALUATIONS

MEASURED,
NOT CLAIMED.

Every flagship says it's smarter. We'd rather show the delta — 3.8 Max against the previous generation, same harness, same day, no cherry-picked seeds.

QWEN 3.7 BASELINEQWEN 3.8 MAX
GPQA DIAMONDscience
0.0+8.3
AIME 2025math
0.0+8.4
LIVECODEBENCH v6code
0.0+8.6
SWE-BENCH VERIFIEDagents
0.0+9.2
MMLU-PROknowledge
0.0+5.2
τ-BENCH RETAILtool use
0.0+7.4
HLE — WITH TOOLSfrontier
0.0+6.7

* PREVIEW FIGURES — INTERNAL EVALUATION, JULY 2026. FINAL NUMBERS SHIP WITH THE MODEL CARD.

02CAPABILITIES

BUILT TO
ACT.

Intelligence that stops at the answer is a parlor trick. 3.8 Max is trained end-to-end to plan, call tools, observe results, and keep going until the job is done.

A — REASONING

Long-chain thinking

Delays its first token on purpose. On hard proofs and system design it drafts, backtracks, and verifies inside a private chain of thought — up to 38k reasoning tokens before you see a word.

SELF-VERIFICATION PASS ▸ 94% CATCH RATE ON SEEDED ERRORS
B — MULTILINGUAL

201 languages,
one mind

Not 201 separate models — one representation space where meaning transfers across scripts, idioms, and registers.

C — AGENTIC CODING

Writes it. Runs it. Fixes it.

Given a repo and a goal, it navigates files, edits, runs the test suite, reads the traceback, and iterates — closing its own loop instead of handing you a diff and a prayer.

D — TOOL USE

Native tool calling

Search, browsers, interpreters, MCP servers — invoked mid-sentence with structured arguments, not bolted on with prompt glue.

ALSO IN THE BOX — VISION ▸ AUDIO ▸ 128K OUTPUT ▸ STRUCTURED JSON ▸ FUNCTION CALLING ▸ STREAMING ▸ BATCH API
03CONTEXT WINDOW

A MILLION TOKENS
OF ROOM.

Not a sliding window — a working memory. Feed it the whole codebase, the full case file, every transcript, and it keeps the thread from first token to last.

0 TOKENS IN-CONTEXT
8K — 2023 128K — PREV GEN 1.0M — NOW
≈ 750,000 WORDS ≈ 1,500 PAGES ≈ 10 HRS OF TRANSCRIPT ONE CODEBASE, WHOLE
04ARCHITECTURE

UNDER
THE HOOD.

A sparse mixture-of-experts transformer, 128 layers deep. Only 8 of 64 experts fire per token — flagship capacity at a fraction of the compute. Move your cursor; scroll to pull the stack apart.

LM HEAD248K VOCAB
RMSNORMFP8 SAFE
MoE FFN ×1288 / 64 ACTIVE
GQA ATTENTION ×1281M RoPE
POSITIONAL ENCODINGYaRN-1M
INPUT EMBEDDINGS248K VOCAB
  • SPARSITY64 experts, top-8 routing — ~6× compute efficiency at iso-quality
  • ATTENTIONGrouped-query, 8 KV heads, native 1M positions without rope-scaling hacks
  • PRECISIONFP8 GEMM in the hot path, BF16 accumulators where it counts
  • SERVINGDisaggregated prefill/decode, speculative drafts from a 3.8-Flash sibling
05PLAYGROUND

TALK TO
THE CORE.

A scripted preview of the inference shell — pick a scenario or type your own line and watch the token stream land.

qwen-3.8-max — inference shell SG-1 · 41ms
you ▸