Kimi K2.5 (Reasoning) vs Nemotron 3 Ultra 500B

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

Quick Verdict

Kimi K2.5 (Reasoning) wins overall with a score of 71 vs 60 (11 point difference).Kimi K2.5 (Reasoning) wins 4 out of 4 categories.

Knowledge

Kimi K2.5 (Reasoning)

Kimi K2.5 (Reasoning)

89

Nemotron 3 Ultra 500B

71.8

92
MMLU
74
90
GPQA
73
88
SuperGPQA
71
86
OpenBookQA
69

Coding

Kimi K2.5 (Reasoning)

Kimi K2.5 (Reasoning)

84

Nemotron 3 Ultra 500B

66

84
HumanEval
66

Mathematics

Kimi K2.5 (Reasoning)

Kimi K2.5 (Reasoning)

93

Nemotron 3 Ultra 500B

73

94
AIME 2023
74
96
AIME 2024
76
95
AIME 2025
75
90
HMMT Feb 2023
70
92
HMMT Feb 2024
72
91
HMMT Feb 2025
71
93
BRUMO 2025
73

Reasoning

Kimi K2.5 (Reasoning)

Kimi K2.5 (Reasoning)

87

Nemotron 3 Ultra 500B

70

88
SimpleQA
71
86
MuSR
69

Frequently Asked Questions

Which is better, Kimi K2.5 (Reasoning) or Nemotron 3 Ultra 500B?

Kimi K2.5 (Reasoning) scores higher overall with 71 vs 60, a difference of 11 points across all benchmarks.

Which is better for knowledge tasks, Kimi K2.5 (Reasoning) or Nemotron 3 Ultra 500B?

Kimi K2.5 (Reasoning) leads in knowledge tasks with an average score of 89 vs 71.8.

Which is better for coding, Kimi K2.5 (Reasoning) or Nemotron 3 Ultra 500B?

Kimi K2.5 (Reasoning) leads in coding with an average score of 84 vs 66.

Which is better for math, Kimi K2.5 (Reasoning) or Nemotron 3 Ultra 500B?

Kimi K2.5 (Reasoning) leads in math with an average score of 93 vs 73.

Which is better for reasoning, Kimi K2.5 (Reasoning) or Nemotron 3 Ultra 500B?

Kimi K2.5 (Reasoning) leads in reasoning with an average score of 87 vs 70.