Claude Fable 5 vs Claude Opus 4.7 — Who Actually Wins? Real Benchmark Data (2026)

head to head

Claude Fable 5 vs Claude Opus 4.7

9 shared benchmarks

8

wins

0

ties

1

wins

88.0%

BrowseComp

79.3%

88.9%

CharXiv

82.1%

92.6%

GPQA Diamond

94.2%

53.3%

Humanity's Last Exam

46.9%

84.7%

MCP-Atlas

79.1%

81.2%

MMMU Pro

75.2%

85.0%

OSWorld-Verified

78.0%

80.3%

SWE-bench Pro

64.3%

84.6%

Terminal-Bench 2.1

66.1%