Haiku 5.5 max leads on quality: 37.4 points higher; GPT 6 Luna low leads on cost and agent time: 72.2× cheaper and 8.5× faster.
Stet score
GPT 6 Luna lowRank 14 of 14
21.295% range 12.5–31.2
Haiku 5.5 maxRank 6 of 14
58.695% range 47.5–69.037.4 points higher
GPT 6 Luna low solved 1 task that Haiku 5.5 max didn’t, and Haiku 5.5 max solved 8 that GPT 6 Luna low didn’t. Both solved 4; neither solved 10.
stet-232b50baPassed testsstet-5276aa3fPassed testsstet-commit-bbbbae09Passed testsstet-commit-f0caded9Passed testsstet-commit-5d766ddeEquivalent to the merged fixstet-6f84e978Equivalent to the merged fixstet-commit-f8ae1177Passed testsstet-2450ca2dPassed testsstet-commit-342d0ac0Equivalent to the merged fixA 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. 1 of the 24 tasks is left out because one of the two has no scored result on it.
| Task | GPT 6 Luna low | Haiku 5.5 max | Solved by |
|---|---|---|---|
stet-3169aefa | Passed tests | Passed tests | Both |
stet-89dfbc27 | Passed tests | Passed tests | Both |
stet-b28f4fe7 | Passed tests | Passed tests | Both |
stet-232b50ba | Passed tests | Failed | GPT 6 Luna low only |
stet-5276aa3f | Failed | Passed tests | Haiku 5.5 max only |
stet-commit-bbbbae09 | No change made | Passed tests | Haiku 5.5 max only |
stet-15439c21 | Passed tests | Passed tests | Both |
stet-66762b4c | Failed | Failed | Neither |
stet-commit-f0caded9 | Failed | Passed tests | Haiku 5.5 max only |
stet-commit-5d766dde | No change made | Equivalent to the merged fix | Haiku 5.5 max only |
stet-43493c52 | Failed | Failed | Neither |
stet-6f84e978 | Failed | Equivalent to the merged fix | Haiku 5.5 max only |
stet-commit-f8ae1177 | No change made | Passed tests | Haiku 5.5 max only |
stet-2450ca2d | Failed | Passed tests | Haiku 5.5 max only |
stet-commit-342d0ac0 | Failed | Equivalent to the merged fix | Haiku 5.5 max only |
stet-commit-5e075641 | Failed | Failed | Neither |
stet-commit-2826765e | Failed | Failed | Neither |
stet-commit-a8716b88 | Failed | Failed | Neither |
stet-commit-30506f8e | Failed | Failed | Neither |
stet-commit-87814583 | Failed | Failed | Neither |
stet-commit-d2ab0c25 | Failed | Failed | Neither |
stet-commit-e41c2e2d | Failed | Failed | Neither |
stet-commit-e928166f | Failed | Failed | Neither |
| Metric | GPT 6 Luna low | Haiku 5.5 max |
|---|---|---|
| Rank | 14 of 14 | 6 of 14 |
| Stet score | 21.295% range 12.5–31.2 | 58.695% range 47.5–69.0 |
| Solved | 5/245 passed, 0 judged equivalent | 12/249 passed, 3 judged equivalent |
| Passed review | 5/204 not recorded | 9/222 not recorded |
| Matched merged change | 5/204 not recorded | 10/222 not recorded |
| Cost / task | $0.05 | $3.85 |
| How cost was recorded | reported by its harness | reported by its harness on 23, estimated from tokens on 1 |
| Agent time / task | 6.9 min | 58.4 min |
| Ran in | Daytona sandbox | Daytona sandbox |
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.
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 low | Haiku 5.5 max | |
|---|---|---|
| Matched merged change | 5/11 | 7/101 not recorded |
| Passed review | 5/11 | 7/101 not recorded |
| Cost / task | $0.02 | $1.18 |
| Agent time / task | 2.1 min | 36.3 min |
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 Luna low | Haiku 5.5 max | |
|---|---|---|
| Matched merged change | 5/7 | 5/7 |
| Passed review | 5/7 | 5/7 |
| Cost / task | $0.01 | $1.15 |
| Agent time / task | 2.1 min | 34.6 min |
13 tasks
13 tasks whose merged change ran over 150 lines or more than 3 files: 113–1,420 lines in 2–19 files.
| GPT 6 Luna low | Haiku 5.5 max | |
|---|---|---|
| Matched merged change | 0/94 not recorded | 3/121 not recorded |
| Passed review | 0/94 not recorded | 2/121 not recorded |
| Cost / task | $0.08 | $6.11 |
| Agent time / task | 11.0 min | 77.1 min |
Stet replays your merged PRs, scores quality above pass/fail, and delivers comparison reports through your agent.
Run it on your repocompare-n24-r3b.