GPT-5.6 Luna — Real Scores Across 9 Benchmarks (2026)

OpenAI

GPT-5.6 Luna

9 benchmarks

GPQA Diamond

#19 of 118

92.3%

Terminal-Bench 2.1

#8 of 27

84.7%

BrowseComp

#18 of 45

83.3%

FrontierMath

#4 of 11

78.6%

MMMU Pro

#16 of 36

78.4%

DeepSWE

#8 of 22

67.2%

SWE-bench Pro

#9 of 43

62.7%

OSWorld 2.0

#6 of 10

45.6%

ARC-AGI 3

#7 of 8

0.18%