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

head to head

Claude Sonnet 4.6 vs Gemini 3 Flash

2 shared benchmarks

1

wins

0

ties

1

wins

89.9%

GPQA Diamond

90.4%

79.6%

SWE-bench Verified

78.0%