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Muse Wonder Full low vs Pareto 26.9

No clear quality winner: Muse Wonder Full low won 10, Pareto 26.9 won 4, 6 tied, 4 undecided; Muse Wonder Full low leads on agent time: 1.8× faster; Muse Wonder Full low’s cost wasn’t recorded.

24 tasksData from

Stet score

Muse Wonder Full lowmuse · low reasoningRank 1 of 16

72.495% range 60.4–83.314.0 points higher

Pareto 26.9claude-code · medium reasoningRank 6 of 16

58.495% range 48.1–68.2

A directional read: their 95% score ranges overlap.

Cost / task

Muse Wonder Full lownot recorded
Pareto 26.9$12.47

Agent time / task

Muse Wonder Full low21.6 min1.8× faster
Pareto 26.939.2 min

Quality

Head-to-head matchups

Muse Wonder Full low won10

Tied64 undecided

Pareto 26.9 won4

Muse Wonder Full low’s win share 64%, 95% range 47–81%Ties are within judge noise.

Task by task

Muse Wonder Full low solved 2 tasks that Pareto 26.9 didn’t, and Pareto 26.9 solved 1 that Muse Wonder Full low didn’t. Both solved 10; neither solved 7.

Muse Wonder Full low only 2

  • stet-commit-5d766ddeEquivalent to the merged fix
  • stet-commit-e928166fEquivalent to the merged fix

Pareto 26.9 only 1

  • stet-6f84e978Passed tests

A task counts as solved when its tests passed or a judge found the fix equivalent to the merged change, as in the leaderboard’s Solved column. Stet score also weighs code quality, so it can order the two differently. 4 of the 24 tasks are left out because one of the two has no scored result on them.

All 20 compared tasks
Task by task
TaskMuse Wonder Full lowPareto 26.9Solved by
stet-3169aefaPassed testsPassed testsBoth
stet-89dfbc27Passed testsPassed testsBoth
stet-b28f4fe7Passed testsPassed testsBoth
stet-232b50baPassed testsPassed testsBoth
stet-5276aa3fPassed testsPassed testsBoth
stet-commit-bbbbae09Passed testsPassed testsBoth
stet-66762b4cEquivalent to the merged fixPassed testsBoth
stet-15439c21Passed testsPassed testsBoth
stet-commit-5d766ddeEquivalent to the merged fixFailedMuse Wonder Full low only
stet-43493c52Passed testsPassed testsBoth
stet-6f84e978FailedPassed testsPareto 26.9 only
stet-2450ca2dPassed testsPassed testsBoth
stet-commit-342d0ac0FailedFailedNeither
stet-commit-60a0e6c2FailedFailedNeither
stet-commit-5e075641FailedFailedNeither
stet-commit-a8716b88FailedFailedNeither
stet-commit-e928166fEquivalent to the merged fixFailedMuse Wonder Full low only
stet-commit-30506f8eFailedFailedNeither
stet-commit-d2ab0c25FailedFailedNeither
stet-commit-e41c2e2dFailedFailedNeither

Side by side

Side by side
MetricMuse Wonder Full lowPareto 26.9
Harnessmuseclaude-code
Reasoning effortlowmedium
Rank1 of 166 of 16
Stet score72.495% range 60.4–83.358.495% range 48.1–68.2
Solved12/249 passed, 3 judged equivalent13/2412 passed, 1 judged equivalent
Cost / tasknot recorded$12.47
Agent time / task21.6 min39.2 min

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About this data

  • 24 tasks, each a merged change replayed from the repo as it was just before the merge.
  • Data from .
  • Both setups come from the same leaderboard run of 16 setups: bmk_d4ba310fdf50db4ccb2092e3.

See all 16 setups on the leaderboardHow Stet measures