Claude Opus 4.6 vs Gemini 3 Flash — Who Actually Wins? Real Benchmark Data (2026)

head to head

Claude Opus 4.6 vs Gemini 3 Flash

2 shared benchmarks

2

wins

0

ties

0

wins

91.3%

GPQA Diamond

90.4%

81.42%

SWE-bench Verified

78.0%