Claude Sonnet 4.6 vs DeepSeek V4 Flash — Who Actually Wins? Real Benchmark Data (2026)

head to head

Claude Sonnet 4.6 vs DeepSeek V4 Flash

6 shared benchmarks

4

wins

0

ties

2

wins

94.0%

AIME

94.8%

74.0%

BrowseComp

73.2%

89.9%

GPQA Diamond

88.1%

79.2%

MMLU Pro

86.2%

79.6%

SWE-bench Verified

79.0%

59.1%

Terminal-Bench 2.0

56.9%