GPT 5.6 Sol Tops ProgramBench, Successfully Rebuilding Complex Programs

jyangballin · x · 2026-08-11

GPT 5.6 Sol (xhigh) has taken the #1 spot on the ProgramBench leaderboard, perfectly rebuilding 2 out of 200 programs. The solved programs include complex ones like cmatrix (506 tests) and hex, a Rust hexdump viewer (823 tests).

Related event: GPT 5.6 Sol Tops ProgramBench, Halving Costs but Showing Python Bias(6 posts)→

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