Kimi K2 vs Z-1

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

Quick Verdict

Z-1 wins overall with a score of 43 vs 23 (20 point difference).Z-1 wins 4 out of 4 categories.

Knowledge

Z-1

Kimi K2

29.8

Z-1

49.8

32
MMLU
52
31
GPQA
51
29
SuperGPQA
49
27
OpenBookQA
47

Coding

Z-1

Kimi K2

24

Z-1

44

24
HumanEval
44

Mathematics

Z-1

Kimi K2

31

Z-1

51

32
AIME 2023
52
34
AIME 2024
54
33
AIME 2025
53
28
HMMT Feb 2023
48
30
HMMT Feb 2024
50
29
HMMT Feb 2025
49
31
BRUMO 2025
51

Reasoning

Z-1

Kimi K2

29

Z-1

49

30
SimpleQA
50
28
MuSR
48

Frequently Asked Questions

Which is better, Kimi K2 or Z-1?

Z-1 scores higher overall with 43 vs 23, a difference of 20 points across all benchmarks.

Which is better for knowledge tasks, Kimi K2 or Z-1?

Z-1 leads in knowledge tasks with an average score of 49.8 vs 29.8.

Which is better for coding, Kimi K2 or Z-1?

Z-1 leads in coding with an average score of 44 vs 24.

Which is better for math, Kimi K2 or Z-1?

Z-1 leads in math with an average score of 51 vs 31.

Which is better for reasoning, Kimi K2 or Z-1?

Z-1 leads in reasoning with an average score of 49 vs 29.