K-Exaone vs Qwen3.5 397B

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

Qwen3.5 397B is clearly ahead on the aggregate, 62 to 49. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

K-Exaone 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. K-Exaone gives you the larger context window at 256K, compared with 128K for Qwen3.5 397B.

Quick Verdict

Pick Qwen3.5 397B if you want the stronger benchmark profile. K-Exaone only becomes the better choice if coding is the priority or you need the larger 256K context window.

Agentic

Coming soon

Comparable scores for this category are coming soon. One or both models do not have sourced results here yet.

Coming soon
Terminal-Bench 2.0
58%
Coming soon
BrowseComp
62%
Coming soon
OSWorld-Verified
52%

Coding

K-Exaone

K-Exaone

49.4

Qwen3.5 397B

40.8

49.4%
SWE-bench Verified
42%
Coming soon
HumanEval
75%
Coming soon
LiveCodeBench
39%
Coming soon
SWE-bench Pro
42%

Multimodal & Grounded

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Comparable scores for this category are coming soon. One or both models do not have sourced results here yet.

Coming soon
MMMU-Pro
56%

Reasoning

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Comparable scores for this category are coming soon. One or both models do not have sourced results here yet.

Coming soon
MuSR
78%
Coming soon
BBH
82%
Coming soon
MRCRv2
71%

Knowledge

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Comparable scores for this category are coming soon. One or both models do not have sourced results here yet.

Coming soon
MMLU
83%
Coming soon
GPQA
82%
Coming soon
SuperGPQA
80%
Coming soon
MMLU-Pro
73%
Coming soon
HLE
10%
Coming soon
FrontierScience
71%
Coming soon
SimpleQA
80%

Instruction Following

Coming soon

Comparable scores for this category are coming soon. One or both models do not have sourced results here yet.

Coming soon
IFEval
82%

Multilingual

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Comparable scores for this category are coming soon. One or both models do not have sourced results here yet.

Coming soon
MGSM
82%
Coming soon
MMLU-ProX
77%

Mathematics

Coming soon

Comparable scores for this category are coming soon. One or both models do not have sourced results here yet.

Coming soon
AIME 2023
83%
Coming soon
AIME 2024
85%
Coming soon
AIME 2025
84%
Coming soon
HMMT Feb 2023
79%
Coming soon
HMMT Feb 2024
81%
Coming soon
HMMT Feb 2025
80%
Coming soon
BRUMO 2025
82%
Coming soon
MATH-500
81%

Frequently Asked Questions

Which is better, K-Exaone or Qwen3.5 397B?

Qwen3.5 397B is ahead overall, 62 to 49. The biggest single separator in this matchup is SWE-bench Verified, where the scores are 49.4% and 42%.

Which is better for coding, K-Exaone or Qwen3.5 397B?

K-Exaone has the edge for coding in this comparison, averaging 49.4 versus 40.8. Inside this category, SWE-bench Verified is the benchmark that creates the most daylight between them.

Last updated: March 18, 2026

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