Claude Opus 4.6 vs Claude Opus 4.8 — Who Actually Wins? Real Benchmark Data (2026)

head to head

Claude Opus 4.6 vs Claude Opus 4.8

6 shared benchmarks

2

wins

0

ties

4

wins

100.0%

AIME

95.7%

84.0%

BrowseComp

84.3%

61.5%

CharXiv

80.5%

91.3%

GPQA Diamond

91.0%

40.0%

Humanity's Last Exam

49.8%

53.4%

SWE-bench Pro

69.2%