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GPT 6 Luna max vs GPT 6 Sol medium

GPT 6 Sol medium leads on quality and agent time: 7.6 points higher and 3.9× faster; GPT 6 Luna max leads on cost: 8.0× cheaper.

24 tasksData from

Stet score

GPT 6 Luna maxRank 8 of 14

50.095% range 40.1–59.3

GPT 6 Sol mediumRank 7 of 14

57.695% range 49.5–65.77.6 points higher

A directional read: their 95% score ranges overlap.

Cost / task

GPT 6 Luna max$0.378.0× cheaper
GPT 6 Sol medium$3.01

Agent time / task

GPT 6 Luna max59.7 min
GPT 6 Sol medium15.4 min3.9× faster

Task by task

GPT 6 Luna max solved 0 tasks that GPT 6 Sol medium didn’t, and GPT 6 Sol medium solved 2 that GPT 6 Luna max didn’t. Both solved 12; neither solved 10.

GPT 6 Luna max only 0

GPT 6 Sol medium only 2

  • stet-15439c21Passed tests
  • 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.

All 24 compared tasks
Task by task
TaskGPT 6 Luna maxGPT 6 Sol mediumSolved 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-15439c21FailedPassed testsGPT 6 Sol medium only
stet-66762b4cEquivalent to the merged fixPassed testsBoth
stet-commit-f0caded9Equivalent to the merged fixEquivalent to the merged fixBoth
stet-commit-5d766ddeEquivalent to the merged fixEquivalent to the merged fixBoth
stet-43493c52Passed testsPassed testsBoth
stet-6f84e978FailedPassed testsGPT 6 Sol medium only
stet-commit-f8ae1177Passed testsPassed testsBoth
stet-2450ca2dFailedFailedNeither
stet-commit-342d0ac0Equivalent to the merged fixEquivalent to the merged fixBoth
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
MetricGPT 6 Luna maxGPT 6 Sol medium
Rank8 of 147 of 14
Stet score50.095% range 40.1–59.357.695% range 49.5–65.7
Solved12/248 passed, 4 judged equivalent14/2411 passed, 3 judged equivalent
Passed review6/248/24
Matched merged change11/2410/24
Cost / task$0.37$3.01
How cost was recordedreported by its harnessestimated from tokens
Agent time / task59.7 min15.4 min
Ran inDaytona sandboxDaytona sandbox

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.

GPT 6 Luna max matched the merged change more often: 7 of 11 to GPT 6 Sol medium’s 6.

Changes up to 150 lines
GPT 6 Luna maxGPT 6 Sol medium
Matched merged change7/116/11
Passed review6/116/11
Cost / task$0.09$0.75
Agent time / task19.0 min6.6 min

Small fixes

7 tasks

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

Both matched the merged change on 5 of 7.

GPT 6 Sol medium passed review more often: 5 of 7 to GPT 6 Luna max’s 4.

Small fixes
GPT 6 Luna maxGPT 6 Sol medium
Matched merged change5/75/7
Passed review4/75/7
Cost / task$0.08$0.60
Agent time / task17.1 min5.4 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.

Both matched the merged change on 4 of 13.

GPT 6 Sol medium passed review more often: 2 of 13 to GPT 6 Luna max’s 0.

Larger changes
GPT 6 Luna maxGPT 6 Sol medium
Matched merged change4/134/13
Passed review0/132/13
Cost / task$0.61$4.92
Agent time / task94.2 min22.9 min

See which setup wins on your repo

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