Claude Opus 4.8 vs Claude Opus 4.7 — Who Actually Wins? Real Benchmark Data (2026)

head to head

Claude Opus 4.8 vs Claude Opus 4.7

10 shared benchmarks

7

wins

0

ties

3

wins

84.3%

BrowseComp

79.3%

80.5%

CharXiv

82.1%

80.0%

FrontierMath

43.8%

91.0%

GPQA Diamond

94.2%

49.8%

Humanity's Last Exam

46.9%

77.8%

MCP-Atlas

79.1%

78.9%

MMMU Pro

75.2%

54.8%

OSWorld 2.0

48.9%

69.2%

SWE-bench Pro

64.3%

84.6%

Terminal-Bench 2.1

66.1%