Claude Opus 4.6 vs GPT-5.4 Pro — Who Actually Wins? Real Benchmark Data (2026)

head to head

Claude Opus 4.6 vs GPT-5.4 Pro

3 shared benchmarks

2

wins

0

ties

1

wins

85.0%

ARC-AGI 2

83.3%

84.0%

BrowseComp

89.3%

53.1%

Humanity's Last Exam

44.32%