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Modelreleased on 16 February 2026

Qwen3.5 397B A17B

59thout of 71General intelligence, ECI index 147.9 (145.8 to 150.2)
Agent tasks52nd out of 5224.9% completed
Coding tasksnot measuredCursorBench
Electricity use of a tasknot estimatedmodel size unknown

Lineage

Company
Alibaba
Qwen (open models) family
Qwen3.5 397B A17BQwen3.5 122B A10BQwen3.5 27BQwen3.5 35B A3BQwen3.5 9BQwen3.6 27BQwen3.8 27Bthe family
Assistants that offer it
No assistant in the ranking names it on a page we have read.
API price
not recorded

Links read on 10/11/2026 on company pages, the press as a fallback; a link given for a family applies only to its latest version.

Rank in each benchmark

  • General intelligenceEpoch AI, ECI index147.9145.8 to 150.259th out of 71
  • User preferenceLMArena, Elo score144151st out of 68
  • Agent tasksEpoch AI, APEX-Agents24.9 %15.7 to 34.152nd out of 52
  • Coding tasksEpoch AI, CursorBenchnot measured
  • Code repairEpoch AI, DeepSWEnot measured

Each segment of the bar is worth a tenth of the ranking; the 1st groups the best ranked. Rank among models released in 2026 and measured by the benchmark. Sources: Epoch AI, "Capabilities & benchmarking" (CC BY 4.0); LMArena, text with style control (CC BY 4.0); data as of 10 November 2026.

Qwen3.5 397B A17B among Alibaba's models, general intelligence

Epoch AI ECI index and its 95% interval, by release date; 9 Alibaba models released in 2026 and measured by the ECI index

FebMarAprMayJunJulAugSep140150160General intelligence index (ECI)Qwen3.5 397B A17BQwen3.8 MaxQwen3.8 Max 0902Qwen3.7 MaxQwen3.8 27BQwen3.7 PlusQwen3.6 27BQwen3.5 35B A3BQwen3.5 9B

Dot: the index measured, at the release dateLine: the 95% intervalQwen3.5 397B A17B

Source: Epoch AI, "Capabilities & benchmarking", ECI index. CC BY 4.0 licence.

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