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

head to head

Claude Opus 4.6 vs GPT-5.4 Nano

3 shared benchmarks

3

wins

0

ties

0

wins

91.3%

GPQA Diamond

82.8%

72.7%

OSWorld

39.0%

81.8%

Terminal-Bench 2.0

46.3%