benchlm.ai

Kimi K2 vs Nemotron Ultra 253B

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

Quick Verdict

Nemotron Ultra 253B wins overall with a score of 40 vs 23 (17 point difference).Nemotron Ultra 253B wins 4 out of 4 categories.

Kimi K2

CreatorMoonshot AI
TypeProprietary
Context128K
Score23

Nemotron Ultra 253B

CreatorNVIDIA
TypeOpen Weight
Context32K
Score40

Knowledge

Nemotron Ultra 253B

Kimi K2

29.8

Nemotron Ultra 253B

46.8

32
MMLU
49
31
GPQA
48
29
SuperGPQA
46
27
OpenBookQA
44

Coding

Nemotron Ultra 253B

Kimi K2

24

Nemotron Ultra 253B

41

24
HumanEval
41

Mathematics

Nemotron Ultra 253B

Kimi K2

31

Nemotron Ultra 253B

48

32
AIME 2023
49
34
AIME 2024
51
33
AIME 2025
50
28
HMMT Feb 2023
45
30
HMMT Feb 2024
47
29
HMMT Feb 2025
46
31
BRUMO 2025
48

Reasoning

Nemotron Ultra 253B

Kimi K2

29

Nemotron Ultra 253B

46

30
SimpleQA
47
28
MuSR
45

Frequently Asked Questions

Which is better, Kimi K2 or Nemotron Ultra 253B?

Nemotron Ultra 253B scores higher overall with 40 vs 23, a difference of 17 points across all benchmarks.

Which is better for knowledge tasks, Kimi K2 or Nemotron Ultra 253B?

Nemotron Ultra 253B leads in knowledge tasks with an average score of 46.8 vs 29.8.

Which is better for coding, Kimi K2 or Nemotron Ultra 253B?

Nemotron Ultra 253B leads in coding with an average score of 41 vs 24.

Which is better for math, Kimi K2 or Nemotron Ultra 253B?

Nemotron Ultra 253B leads in math with an average score of 48 vs 31.

Which is better for reasoning, Kimi K2 or Nemotron Ultra 253B?

Nemotron Ultra 253B leads in reasoning with an average score of 46 vs 29.

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