K-Exaone vs Nemotron Ultra 253B

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

K-Exaone has the cleaner overall profile here, landing at 49 versus 46. It is a real lead, but still close enough that category-level strengths matter more than the headline number.

K-Exaone's sharpest advantage is in coding, where it averages 49.4 against 31. The single biggest benchmark swing on the page is SWE-bench Verified, 49.4% to 31%.

K-Exaone gives you the larger context window at 256K, compared with 32K for Nemotron Ultra 253B.

Quick Verdict

Pick K-Exaone if you want the stronger benchmark profile. Nemotron Ultra 253B only becomes the better choice if its workflow or ecosystem matters more than the raw scoreboard.

Agentic

Coming soon

Benchmark data for this category is coming soon.

Coding

K-Exaone

K-Exaone

49.4

Nemotron Ultra 253B

31

49.4%
SWE-bench Verified
31%
Coming soon
HumanEval
41%

Multimodal & Grounded

Coming soon

Benchmark data for this category is coming soon.

Reasoning

Coming soon

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

Coming soon
MuSR
45%

Knowledge

Coming soon

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

Coming soon
MMLU
49%
Coming soon
GPQA
48%
Coming soon
SuperGPQA
46%
Coming soon
MMLU-Pro
63%
Coming soon
SimpleQA
47%

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
78%

Multilingual

Coming soon

Benchmark data for this category is coming soon.

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
49%
Coming soon
AIME 2024
51%
Coming soon
AIME 2025
50%
Coming soon
HMMT Feb 2023
45%
Coming soon
HMMT Feb 2024
47%
Coming soon
HMMT Feb 2025
46%
Coming soon
BRUMO 2025
48%
Coming soon
MATH-500
74%

Frequently Asked Questions

Which is better, K-Exaone or Nemotron Ultra 253B?

K-Exaone is ahead overall, 49 to 46. The biggest single separator in this matchup is SWE-bench Verified, where the scores are 49.4% and 31%.

Which is better for coding, K-Exaone or Nemotron Ultra 253B?

K-Exaone has the edge for coding in this comparison, averaging 49.4 versus 31. 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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