Qwen3.5-35B-A3B vs Qwen3.5 397B

Side-by-side benchmark comparison across agentic, coding, multimodal, knowledge, reasoning, and math workflows.

Agentic
Coding
Multimodal & Grounded
Reasoning
Knowledge
Instruction Following
Multilingual
Mathematics

Qwen3.5-35B-A3B· Qwen3.5 397B

Quick Verdict

Pick Qwen3.5-35B-A3B if you want the stronger benchmark profile. Qwen3.5 397B only becomes the better choice if reasoning is the priority or you would rather avoid the extra latency and token burn of a reasoning model.

Qwen3.5-35B-A3B has the cleaner overall profile here, landing at 67 versus 64. It is a real lead, but still close enough that category-level strengths matter more than the headline number.

Qwen3.5-35B-A3B's sharpest advantage is in coding, where it averages 72.6 against 40.8. The single biggest benchmark swing on the page is LiveCodeBench, 74.6% to 39%. Qwen3.5 397B does hit back in reasoning, so the answer changes if that is the part of the workload you care about most.

Qwen3.5-35B-A3B is the reasoning model in the pair, while Qwen3.5 397B is not. That usually helps on harder chain-of-thought-heavy tests, but it can also mean more latency and more token spend in real use. Qwen3.5-35B-A3B gives you the larger context window at 262K, compared with 128K for Qwen3.5 397B.

Operational tradeoffs

PriceFree*Free*
SpeedN/A96 t/s
TTFTN/A2.44s
Context262K128K

Decision framing

BenchLM keeps the benchmark table and the operator tradeoffs on the same page so a better score does not hide a materially slower, pricier, or smaller-context model.

Runtime metrics show N/A when BenchLM does not have a sourced snapshot for that exact model. The scoring rules and freshness policy are documented on the methodology page.

BenchmarkQwen3.5-35B-A3BQwen3.5 397B
AgenticQwen3.5 397B wins
Terminal-Bench 2.040.5%58%
BrowseComp61%62%
OSWorld-Verified54.5%52%
tau2-bench81.2%
CodingQwen3.5-35B-A3B wins
SWE-bench Verified69.2%42%
LiveCodeBench74.6%39%
HumanEval75%
SWE-bench Pro42%
Multimodal & GroundedQwen3.5-35B-A3B wins
MMMU-Pro75.1%56%
OfficeQA Pro68%
ReasoningQwen3.5 397B wins
LongBench v259%72%
MuSR78%
BBH82%
MRCRv271%
KnowledgeQwen3.5-35B-A3B wins
MMLU-Pro85.3%73%
SuperGPQA63.4%80%
GPQA84.2%82%
MMLU83%
HLE10%
FrontierScience71%
SimpleQA80%
Instruction FollowingQwen3.5-35B-A3B wins
IFEval91.9%82%
MultilingualQwen3.5-35B-A3B wins
MMLU-ProX81%77%
MGSM82%
Mathematics
AIME 202383%
AIME 202485%
AIME 202584%
HMMT Feb 202379%
HMMT Feb 202481%
HMMT Feb 202580%
BRUMO 202582%
MATH-50081%
Frequently Asked Questions (8)

Which is better, Qwen3.5-35B-A3B or Qwen3.5 397B?

Qwen3.5-35B-A3B is ahead overall, 67 to 64. The biggest single separator in this matchup is LiveCodeBench, where the scores are 74.6% and 39%.

Which is better for knowledge tasks, Qwen3.5-35B-A3B or Qwen3.5 397B?

Qwen3.5-35B-A3B has the edge for knowledge tasks in this comparison, averaging 79.3 versus 61. Inside this category, SuperGPQA is the benchmark that creates the most daylight between them.

Which is better for coding, Qwen3.5-35B-A3B or Qwen3.5 397B?

Qwen3.5-35B-A3B has the edge for coding in this comparison, averaging 72.6 versus 40.8. Inside this category, LiveCodeBench is the benchmark that creates the most daylight between them.

Which is better for reasoning, Qwen3.5-35B-A3B or Qwen3.5 397B?

Qwen3.5 397B has the edge for reasoning in this comparison, averaging 73.3 versus 59. Inside this category, LongBench v2 is the benchmark that creates the most daylight between them.

Which is better for agentic tasks, Qwen3.5-35B-A3B or Qwen3.5 397B?

Qwen3.5 397B has the edge for agentic tasks in this comparison, averaging 56.9 versus 50.5. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.

Which is better for multimodal and grounded tasks, Qwen3.5-35B-A3B or Qwen3.5 397B?

Qwen3.5-35B-A3B has the edge for multimodal and grounded tasks in this comparison, averaging 75.1 versus 61.4. Inside this category, MMMU-Pro is the benchmark that creates the most daylight between them.

Which is better for instruction following, Qwen3.5-35B-A3B or Qwen3.5 397B?

Qwen3.5-35B-A3B has the edge for instruction following in this comparison, averaging 91.9 versus 82. Inside this category, IFEval is the benchmark that creates the most daylight between them.

Which is better for multilingual tasks, Qwen3.5-35B-A3B or Qwen3.5 397B?

Qwen3.5-35B-A3B has the edge for multilingual tasks in this comparison, averaging 81 versus 78.8. Inside this category, MMLU-ProX is the benchmark that creates the most daylight between them.

Last updated: March 31, 2026

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