GPT-5.4 vs Kimi K2.5 — Who Actually Wins? Real Benchmark Data (2026)

head to head

GPT-5.4 vs Kimi K2.5

9 shared benchmarks

9

wins

0

ties

0

wins

82.7%

BrowseComp

60.6%

92.8%

GPQA Diamond

87.6%

36.24%

Humanity's Last Exam

24.37%

81.2%

MMMU Pro

78.5%

75.0%

OSWorld

63.3%

57.7%

SWE-bench Pro

50.7%

77.2%

SWE-bench Verified

76.8%

81.8%

Terminal-Bench 2.0

50.8%

67.3%

WebArena

58.9%