Claude Opus 4.6 vs Step-3.5-Flash — Who Actually Wins? Real Benchmark Data (2026)

head to head

Claude Opus 4.6 vs Step-3.5-Flash

7 shared benchmarks

5

wins

0

ties

2

wins

100.0%

AIME

97.3%

84.0%

BrowseComp

69.0%

91.3%

GPQA Diamond

83.5%

76.0%

LiveCodeBench

86.4%

82.0%

MMLU Pro

84.4%

81.42%

SWE-bench Verified

74.4%

81.8%

Terminal-Bench 2.0

51.0%