Claude Opus 4.6 vs Gemini 3.1 Pro — Who Actually Wins? Real Benchmark Data (2026)

head to head

Claude Opus 4.6 vs Gemini 3.1 Pro

9 shared benchmarks

6

wins

0

ties

3

wins

100.0%

AIME

98.13%

85.0%

ARC-AGI 2

77.1%

84.0%

BrowseComp

85.9%

91.3%

GPQA Diamond

94.3%

53.1%

Humanity's Last Exam

44.4%

82.0%

MMLU Pro

90.99%

93.0%

MRCR v2

84.9%

81.42%

SWE-bench Verified

80.6%

81.8%

Terminal-Bench 2.0

80.2%