benchlm.ai

Kimi K2.5 vs Nemotron Ultra 253B

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

Quick Verdict

Kimi K2.5 wins overall with a score of 62 vs 40 (22 point difference).Kimi K2.5 wins 4 out of 4 categories.

Kimi K2.5

CreatorMoonshot AI
TypeOpen Weight
Context128K
Score62

Nemotron Ultra 253B

CreatorNVIDIA
TypeOpen Weight
Context32K
Score40

Knowledge

Kimi K2.5

Kimi K2.5

74.8

Nemotron Ultra 253B

46.8

77
MMLU
49
76
GPQA
48
74
SuperGPQA
46
72
OpenBookQA
44

Coding

Kimi K2.5

Kimi K2.5

69

Nemotron Ultra 253B

41

69
HumanEval
41

Mathematics

Kimi K2.5

Kimi K2.5

76

Nemotron Ultra 253B

48

77
AIME 2023
49
79
AIME 2024
51
78
AIME 2025
50
73
HMMT Feb 2023
45
75
HMMT Feb 2024
47
74
HMMT Feb 2025
46
76
BRUMO 2025
48

Reasoning

Kimi K2.5

Kimi K2.5

73

Nemotron Ultra 253B

46

74
SimpleQA
47
72
MuSR
45

Frequently Asked Questions

Which is better, Kimi K2.5 or Nemotron Ultra 253B?

Kimi K2.5 scores higher overall with 62 vs 40, a difference of 22 points across all benchmarks.

Which is better for knowledge tasks, Kimi K2.5 or Nemotron Ultra 253B?

Kimi K2.5 leads in knowledge tasks with an average score of 74.8 vs 46.8.

Which is better for coding, Kimi K2.5 or Nemotron Ultra 253B?

Kimi K2.5 leads in coding with an average score of 69 vs 41.

Which is better for math, Kimi K2.5 or Nemotron Ultra 253B?

Kimi K2.5 leads in math with an average score of 76 vs 48.

Which is better for reasoning, Kimi K2.5 or Nemotron Ultra 253B?

Kimi K2.5 leads in reasoning with an average score of 73 vs 46.

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