GLM-5 vs GPT-5.3 Codex — Who Actually Wins? Real Benchmark Data (2026)

head to head

GLM-5 vs GPT-5.3 Codex

4 shared benchmarks

0

wins

0

ties

4

wins

86.0%

GPQA Diamond

91.5%

30.5%

Humanity's Last Exam

39.9%

77.8%

SWE-bench Verified

80.0%

56.2%

Terminal-Bench 2.0

77.3%