Claude 3.5 Sonnet vs K-Exaone

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

Claude 3.5 Sonnet is clearly ahead on the aggregate, 60 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 Claude 3.5 Sonnet 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 200K for Claude 3.5 Sonnet.

Quick Verdict

Pick Claude 3.5 Sonnet 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.

54%
Terminal-Bench 2.0
Coming soon
62%
BrowseComp
Coming soon
51%
OSWorld-Verified
Coming soon

Coding

K-Exaone

Claude 3.5 Sonnet

40.5

K-Exaone

49.4

92%
HumanEval
Coming soon
49%
SWE-bench Verified
49.4%
39%
LiveCodeBench
Coming soon
37%
SWE-bench Pro
Coming soon

Multimodal & Grounded

Coming soon

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

77%
MMMU-Pro
Coming soon
72%
OfficeQA Pro
Coming soon

Reasoning

Coming soon

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

61%
MuSR
Coming soon
83%
BBH
Coming soon
70%
LongBench v2
Coming soon
70%
MRCRv2
Coming soon

Knowledge

Coming soon

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

90.4%
MMLU
Coming soon
59.4%
GPQA
Coming soon
63%
SuperGPQA
Coming soon
74%
MMLU-Pro
Coming soon
5%
HLE
Coming soon
59%
FrontierScience
Coming soon
63%
SimpleQA
Coming soon

Instruction Following

Coming soon

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

83%
IFEval
Coming soon

Multilingual

Coming soon

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

85%
MGSM
Coming soon
78%
MMLU-ProX
Coming soon

Mathematics

Coming soon

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

65%
AIME 2023
Coming soon
67%
AIME 2024
Coming soon
66%
AIME 2025
Coming soon
61%
HMMT Feb 2023
Coming soon
63%
HMMT Feb 2024
Coming soon
62%
HMMT Feb 2025
Coming soon
64%
BRUMO 2025
Coming soon
80%
MATH-500
Coming soon

Frequently Asked Questions

Which is better, Claude 3.5 Sonnet or K-Exaone?

Claude 3.5 Sonnet is ahead overall, 60 to 49. The biggest single separator in this matchup is SWE-bench Verified, where the scores are 49% and 49.4%.

Which is better for coding, Claude 3.5 Sonnet or K-Exaone?

K-Exaone has the edge for coding in this comparison, averaging 49.4 versus 40.5. 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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