GPT-4o vs Qwen3.5-35B-A3B

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

Agentic
Coding
Multimodal & Grounded
Reasoning
Knowledge
Instruction Following
Multilingual
Mathematics

GPT-4o· Qwen3.5-35B-A3B

Quick Verdict

Pick Qwen3.5-35B-A3B if you want the stronger benchmark profile. GPT-4o 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 is clearly ahead on the aggregate, 68 to 55. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

Qwen3.5-35B-A3B's sharpest advantage is in coding, where it averages 72.6 against 30.4. The single biggest benchmark swing on the page is SWE-bench Verified, 20% to 69.2%. GPT-4o does hit back in reasoning, so the answer changes if that is the part of the workload you care about most.

GPT-4o is also the more expensive model on tokens at $2.50 input / $10.00 output per 1M tokens, versus $0.00 input / $0.00 output per 1M tokens for Qwen3.5-35B-A3B. That is roughly Infinityx on output cost alone. Qwen3.5-35B-A3B is the reasoning model in the pair, while GPT-4o 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 GPT-4o.

Operational tradeoffs

Price$2.50 / $10.00Free*
Speed131 t/sN/A
TTFT0.81sN/A
Context128K262K

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.

BenchmarkGPT-4oQwen3.5-35B-A3B
AgenticGPT-4o wins
Terminal-Bench 2.049%40.5%
BrowseComp59%61%
OSWorld-Verified48%54.5%
tau2-bench81.2%
CodingQwen3.5-35B-A3B wins
HumanEval58%
SWE-bench Verified20%69.2%
LiveCodeBench38%74.6%
SWE-bench Pro29%
Multimodal & GroundedQwen3.5-35B-A3B wins
MMMU-Pro74%75.1%
OfficeQA Pro70%
ReasoningGPT-4o wins
MuSR62%
BBH82%
LongBench v262%59%
MRCRv263%
KnowledgeQwen3.5-35B-A3B wins
MMLU66%
GPQA66%84.2%
SuperGPQA64%63.4%
MMLU-Pro64%85.3%
HLE1%
FrontierScience58%
SimpleQA64%
Instruction FollowingQwen3.5-35B-A3B wins
IFEval82%91.9%
MultilingualQwen3.5-35B-A3B wins
MGSM82%
MMLU-ProX72%81%
Mathematics
AIME 202366%
AIME 202468%
AIME 202567%
HMMT Feb 202362%
HMMT Feb 202464%
HMMT Feb 202563%
BRUMO 202565%
MATH-50080%
Frequently Asked Questions (8)

Which is better, GPT-4o or Qwen3.5-35B-A3B?

Qwen3.5-35B-A3B is ahead overall, 68 to 55. The biggest single separator in this matchup is SWE-bench Verified, where the scores are 20% and 69.2%.

Which is better for knowledge tasks, GPT-4o or Qwen3.5-35B-A3B?

Qwen3.5-35B-A3B has the edge for knowledge tasks in this comparison, averaging 79.3 versus 48.7. Inside this category, MMLU-Pro is the benchmark that creates the most daylight between them.

Which is better for coding, GPT-4o or Qwen3.5-35B-A3B?

Qwen3.5-35B-A3B has the edge for coding in this comparison, averaging 72.6 versus 30.4. Inside this category, SWE-bench Verified is the benchmark that creates the most daylight between them.

Which is better for reasoning, GPT-4o or Qwen3.5-35B-A3B?

GPT-4o has the edge for reasoning in this comparison, averaging 62.3 versus 59. Inside this category, LongBench v2 is the benchmark that creates the most daylight between them.

Which is better for agentic tasks, GPT-4o or Qwen3.5-35B-A3B?

GPT-4o has the edge for agentic tasks in this comparison, averaging 51.2 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, GPT-4o or Qwen3.5-35B-A3B?

Qwen3.5-35B-A3B has the edge for multimodal and grounded tasks in this comparison, averaging 75.1 versus 72.2. Inside this category, MMMU-Pro is the benchmark that creates the most daylight between them.

Which is better for instruction following, GPT-4o or Qwen3.5-35B-A3B?

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, GPT-4o or Qwen3.5-35B-A3B?

Qwen3.5-35B-A3B has the edge for multilingual tasks in this comparison, averaging 81 versus 75.5. Inside this category, MMLU-ProX is the benchmark that creates the most daylight between them.

Last updated: March 31, 2026

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