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

head to head

Claude Sonnet 4.6 vs GPT-5.4 Mini

3 shared benchmarks

2

wins

0

ties

1

wins

89.9%

GPQA Diamond

88.0%

72.5%

OSWorld

72.1%

59.1%

Terminal-Bench 2.0

60.0%