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

head to head

Claude Sonnet 4.6 vs GPT-5.4

5 shared benchmarks

1

wins

0

ties

4

wins

74.0%

BrowseComp

82.7%

89.9%

GPQA Diamond

92.8%

72.5%

OSWorld

75.0%

79.6%

SWE-bench Verified

77.2%

59.1%

Terminal-Bench 2.0

81.8%