Pareto 26.9 leads on quality and agent time: 0.5 points higher and 1.5× faster; Haiku 5.5 max leads on cost: 3.2× cheaper.
Stet score
Haiku 5.5 maxRank 6 of 14
58.695% range 47.5–69.0
Pareto 26.9Rank 5 of 14
59.195% range 48.8–69.20.5 points higher
Haiku 5.5 max solved 2 tasks that Pareto 26.9 didn’t, and Pareto 26.9 solved 3 that Haiku 5.5 max didn’t. Both solved 10; neither solved 8.
stet-commit-5d766ddeEquivalent to the merged fixstet-commit-342d0ac0Equivalent to the merged fixstet-232b50baPassed testsstet-66762b4cPassed testsstet-43493c52Passed testsA 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 | Haiku 5.5 max | Pareto 26.9 | 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 | Failed | Passed tests | Pareto 26.9 only |
stet-5276aa3f | Passed tests | Passed tests | Both |
stet-commit-bbbbae09 | Passed tests | Passed tests | Both |
stet-15439c21 | Passed tests | Passed tests | Both |
stet-66762b4c | Failed | Passed tests | Pareto 26.9 only |
stet-commit-f0caded9 | Passed tests | Equivalent to the merged fix | Both |
stet-commit-5d766dde | Equivalent to the merged fix | Failed | Haiku 5.5 max only |
stet-43493c52 | Failed | Passed tests | Pareto 26.9 only |
stet-6f84e978 | Equivalent to the merged fix | Passed tests | Both |
stet-commit-f8ae1177 | Passed tests | Passed tests | Both |
stet-2450ca2d | Passed tests | Passed tests | Both |
stet-commit-342d0ac0 | Equivalent to the merged fix | Failed | 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 | Haiku 5.5 max | Pareto 26.9 |
|---|---|---|
| Rank | 6 of 14 | 5 of 14 |
| Stet score | 58.695% range 47.5–69.0 | 59.195% range 48.8–69.2 |
| Solved | 12/249 passed, 3 judged equivalent | 13/2412 passed, 1 judged equivalent |
| Passed review | 9/222 not recorded | 8/24 |
| Matched merged change | 10/222 not recorded | 9/24 |
| Cost / task | $3.85 | $12.47 |
| How cost was recorded | reported by its harness on 23, estimated from tokens on 1 | reported by its harness on 23, estimated from tokens on 1 |
| Agent time / task | 58.4 min | 39.2 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.
| Haiku 5.5 max | Pareto 26.9 | |
|---|---|---|
| Matched merged change | 7/101 not recorded | 7/11 |
| Passed review | 7/101 not recorded | 7/11 |
| Cost / task | $1.18 | $5.74 |
| Agent time / task | 36.3 min | 29.4 min |
7 tasks
7 tasks whose instructions start with “Fix”. Their merged changes were 4–29 lines in 1–2 files.
Haiku 5.5 max matched the merged change more often: 5 of 7 to Pareto 26.9’s 4.
| Haiku 5.5 max | Pareto 26.9 | |
|---|---|---|
| Matched merged change | 5/7 | 4/7 |
| Passed review | 5/7 | 5/7 |
| Cost / task | $1.15 | $5.42 |
| Agent time / task | 34.6 min | 30.6 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.
| Haiku 5.5 max | Pareto 26.9 | |
|---|---|---|
| Matched merged change | 3/121 not recorded | 2/13 |
| Passed review | 2/121 not recorded | 1/13 |
| Cost / task | $6.11 | $18.18 |
| Agent time / task | 77.1 min | 47.4 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.