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GPT 6.1 Sol medium vs SWE-2 Max

SWE-2 Max leads on quality: 1.1 points higher; GPT 6.1 Sol medium leads on agent time: 5.8× faster; SWE-2 Max’s cost wasn’t recorded.

24 tasksData from

Stet score

GPT 6.1 Sol mediumRank 2 of 14

65.395% range 55.6–74.6

SWE-2 MaxRank 1 of 14

66.495% range 56.8–75.41.1 points higher

A directional read: their 95% score ranges overlap.

Cost / task

GPT 6.1 Sol medium$1.10
SWE-2 Maxnot recorded

Agent time / task

GPT 6.1 Sol medium11.8 min5.8× faster
SWE-2 Max68.3 min

Task by task

GPT 6.1 Sol medium solved 2 tasks that SWE-2 Max didn’t, and SWE-2 Max solved 5 that GPT 6.1 Sol medium didn’t. Both solved 11; neither solved 6.

GPT 6.1 Sol medium only 2

  • stet-43493c52Passed tests
  • stet-commit-f8ae1177Passed tests

SWE-2 Max only 5

  • stet-commit-f0caded9Passed tests
  • stet-2450ca2dPassed tests
  • stet-commit-60a0e6c2Passed tests
  • stet-commit-5e075641Passed tests
  • stet-commit-a8716b88Equivalent 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
TaskGPT 6.1 Sol mediumSWE-2 MaxSolved 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 testsEquivalent to the merged fixBoth
stet-66762b4cPassed testsPassed testsBoth
stet-commit-f0caded9FailedPassed testsSWE-2 Max only
stet-commit-5d766ddeEquivalent to the merged fixPassed testsBoth
stet-43493c52Passed testsFailedGPT 6.1 Sol medium only
stet-6f84e978Equivalent to the merged fixPassed testsBoth
stet-commit-f8ae1177Passed testsFailedGPT 6.1 Sol medium only
stet-2450ca2dFailedPassed testsSWE-2 Max only
stet-commit-342d0ac0Equivalent to the merged fixEquivalent to the merged fixBoth
stet-commit-60a0e6c2FailedPassed testsSWE-2 Max only
stet-commit-5e075641FailedPassed testsSWE-2 Max only
stet-commit-2826765eFailedFailedNeither
stet-commit-a8716b88FailedEquivalent to the merged fixSWE-2 Max only
stet-commit-30506f8eFailedFailedNeither
stet-commit-87814583FailedFailedNeither
stet-commit-d2ab0c25FailedFailedNeither
stet-commit-e41c2e2dFailedFailedNeither
stet-commit-e928166fFailedFailedNeither

Side by side

Side by side
MetricGPT 6.1 Sol mediumSWE-2 Max
Rank2 of 141 of 14
Stet score65.395% range 55.6–74.666.495% range 56.8–75.4
Solved13/2410 passed, 3 judged equivalent16/2413 passed, 3 judged equivalent
Passed review10/248/24
Matched merged change10/2413/24
Cost / task$1.10not recorded
How cost was recordedestimated from tokensnot recorded
Agent time / task11.8 min68.3 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.

SWE-2 Max matched the merged change more often: 8 of 11 to GPT 6.1 Sol medium’s 7.

Changes up to 150 lines
GPT 6.1 Sol mediumSWE-2 Max
Matched merged change7/118/11
Passed review8/117/11
Cost / task$0.47not recorded
Agent time / task5.8 min22.1 min

Small fixes

7 tasks

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

GPT 6.1 Sol medium matched the merged change more often: 6 of 7 to SWE-2 Max’s 5.

Small fixes
GPT 6.1 Sol mediumSWE-2 Max
Matched merged change6/75/7
Passed review5/75/7
Cost / task$0.42not recorded
Agent time / task5.3 min21.5 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.

SWE-2 Max matched the merged change more often: 5 of 13 to GPT 6.1 Sol medium’s 3.

Larger changes
GPT 6.1 Sol mediumSWE-2 Max
Matched merged change3/135/13
Passed review2/131/13
Cost / task$1.63not recorded
Agent time / task16.9 min107.3 min

From the leaderboard’s routing advice

  • Small fix: to spend less, use GPT 6.1 Sol medium.
  • Larger change: use GPT 6.1 Sol medium.
  • Anything else: use GPT 6.1 Sol medium.

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