Claude Mythos 5 vs Claude Sonnet 4.6 — Who Actually Wins? Real Benchmark Data (2026)

head to head

Claude Mythos 5 vs Claude Sonnet 4.6

2 shared benchmarks

2

wins

0

ties

0

wins

88.0%

BrowseComp

74.0%

94.1%

GPQA Diamond

89.9%