GPT-5.6 Beats Claude Opus 5 in Bug Hunt Benchmark
In a Bug Hunt Bench test involving 45 hidden bugs in a VS Code extension, GPT-5.6 Sol successfully fixed 22 bugs, outperforming Claude Opus 5 which fixed 11 to 12 bugs and older versions that missed these specific issues.
2026-07-25 ~ 2026-07-25 · 3 related posts
- Episode 1: Opus 5 Coding Paradox: Higher Reasoning Leads to Lower Scores(2026-07-24, 13 posts)
- Episode 2: Claude Opus 5 Shows Erratic Behavior in Probability Tests(2026-07-25, 3 posts)
- Episode 3: GPT-5.6 Beats Claude Opus 5 in Bug Hunt Benchmark(2026-07-25, 3 posts)
- Bug Hunt Bench: GPT-5.6 Sol fixes 22 bugs, Opus 5 12, on a 45-bug repo — PawelHuryn · 2026-07-25
- Claude Opus 5 fixes 11 of 45 hidden bugs, versus 2 for Opus 4.8 — PawelHuryn · 2026-07-25
- Claude Opus 5 spots code issues earlier versions and Codex kept missing — PawelHuryn · 2026-07-25