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GLM 5.3 Flash vs Muse control

Muse control leads on quality, cost and agent time: 2.2 points higher, 4.1× cheaper and 2.0× faster.

24 tasksData from

Stet score

GLM 5.3 FlashRank 13 of 14

31.095% range 21.5–41.5

Muse controlRank 12 of 14

33.295% range 24.3–42.42.2 points higher

A directional read: their 95% score ranges overlap.

Cost / task

GLM 5.3 Flash$0.41
Muse control$0.104.1× cheaper

Agent time / task

GLM 5.3 Flash26.7 min
Muse control13.2 min2.0× faster

Task by task

GLM 5.3 Flash solved 2 tasks that Muse control didn’t, and Muse control solved 3 that GLM 5.3 Flash didn’t. Both solved 7; neither solved 12.

GLM 5.3 Flash only 2

  • stet-15439c21Passed tests
  • stet-commit-f0caded9Passed tests

Muse control only 3

  • stet-commit-5d766ddeEquivalent to the merged fix
  • stet-43493c52Passed tests
  • stet-2450ca2dEquivalent to the merged fix

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.

All 24 compared tasks
Task by task
TaskGLM 5.3 FlashMuse controlSolved 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-15439c21Passed testsFailedGLM 5.3 Flash only
stet-66762b4cPassed testsPassed testsBoth
stet-commit-f0caded9Passed testsFailedGLM 5.3 Flash only
stet-commit-5d766ddeFailedEquivalent to the merged fixMuse control only
stet-43493c52FailedPassed testsMuse control only
stet-6f84e978FailedFailedNeither
stet-commit-f8ae1177FailedFailedNeither
stet-2450ca2dFailedEquivalent to the merged fixMuse control only
stet-commit-342d0ac0FailedFailedNeither
stet-commit-60a0e6c2FailedFailedNeither
stet-commit-5e075641FailedFailedNeither
stet-commit-2826765eFailedFailedNeither
stet-commit-a8716b88FailedFailedNeither
stet-commit-30506f8eFailedFailedNeither
stet-commit-87814583FailedFailedNeither
stet-commit-d2ab0c25FailedFailedNeither
stet-commit-e41c2e2dFailedFailedNeither
stet-commit-e928166fFailedFailedNeither

Side by side

Side by side
MetricGLM 5.3 FlashMuse control
Rank13 of 1412 of 14
Stet score31.095% range 21.5–41.533.295% range 24.3–42.4
Solved9/249 passed, 0 judged equivalent10/248 passed, 2 judged equivalent
Passed review6/231 not recorded5/24
Matched merged change6/248/24
Cost / task$0.41$0.10
How cost was recordedestimated from tokensestimated from tokens
Agent time / task26.7 min13.2 min
Ran inDaytona sandboxlocal Docker

Where each setup is the better choice

The leaderboard’s readings on groups of tasks. Each group holds fewer tasks than the overall standings, so treat these as leads to test on your repo.

Changes up to 150 lines

11 tasks

11 tasks whose merged change was 2–149 lines in 1–2 files. The 7 small fixes below are among them.

Muse control matched the merged change more often: 7 of 11 to GLM 5.3 Flash’s 6.

Changes up to 150 lines
GLM 5.3 FlashMuse control
Matched merged change6/117/11
Passed review6/101 not recorded5/11
Cost / task$0.06$0.03
Agent time / task10.2 min4.3 min

Small fixes

7 tasks

7 tasks whose instructions start with “Fix”. Their merged changes were 4–29 lines in 1–2 files.

GLM 5.3 Flash matched the merged change more often: 5 of 7 to Muse control’s 4.

Small fixes
GLM 5.3 FlashMuse control
Matched merged change5/74/7
Passed review5/74/7
Cost / task$0.05$0.03
Agent time / task9.4 min4.3 min

Larger changes

13 tasks

13 tasks whose merged change ran over 150 lines or more than 3 files: 113–1,420 lines in 2–19 files.

Muse control matched the merged change more often: 1 of 13 to GLM 5.3 Flash’s 0.

Larger changes
GLM 5.3 FlashMuse control
Matched merged change0/131/13
Passed review0/130/13
Cost / task$0.70$0.16
Agent time / task40.7 min20.8 min

See which setup wins on your repo

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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 14 setups: compare-n24-r3b.

See all 14 setups on the leaderboardHow Stet measures