The benchmark. I gave all three agents the same 50-task suite — bug fixes, refactors, new features, code review, and lore generation. Total time: 6 hours. Total cost: $47 in API credits.
The scores
| Task | JKP | Copilot | Cursor |
|---|---|---|---|
| Bug fix (memory leak) | 30s | 12 min | 8 min |
| Refactor (200-line script) | 45s | 20 min | 15 min |
| New feature (faction ability) | 2 min | 30 min | 25 min |
| Code review (PR-sized) | 90s | N/A | 18 min |
| Lore generation (chapter) | 3 min | N/A | N/A |
Why JKP wins
JKP was built for one thing: shipping Roblox games. Copilot and Cursor are general-purpose code agents. JKP knows Luau, knows Roblox Studio, knows the EFER codebase. The specialization is the entire advantage.
What I would pay for
If I had to pick one and only one: JKP. The 10-30x speedup on Roblox-specific tasks is the difference between shipping this month and shipping in Q4.
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