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Hbench

humaneval-plus@1.0 (unreviewed) on GPT-5.6 Luna

164 tasks, 1 attempt, open network. Updated 24 Oct 2026.

164 tasks from humaneval-plus@1.0 on ghcr.io. Nobody has reviewed this dataset, so a score here says nothing about the benchmark it's named after.

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Claude Code 2.1.309 against Codex 0.164.0, task by task

Over the 164 tasks both ran, 1 attempt each

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Claude Code 2.1.309 minus Codex 0.164.0, pass rate

−1.8 points

95% interval −4.9 to +0.6

The interval includes zero, so the paired test can't tell the two apart.

Where the tasks landed

  • 1Only Claude Code 2.1.309 solved
  • 153Both solved
  • 4Only Codex 0.164.0 solved
  • 6Neither solved

Of 164 tasks, 1 only Claude Code 2.1.309 solved, 4 only Codex 0.164.0 solved, 153 both solved and 6 neither did.

Claude Code 2.1.309 and Codex 0.164.0, task by task
TaskRewardTokensTime
Claude Code 2.1.309Codex 0.164.0Claude Code 2.1.309Codex 0.164.0Claude Code 2.1.309Codex 0.164.0
humaneval-plus-13701136k46k1.4 min17 s
humaneval-plus-1510142k45k21 s14 s
humaneval-plus-220131k33k15 s11 s
humaneval-plus-760133k73k44 s28 s
humaneval-plus-831041k56k21 s19 s