JetBrains MythBusters tested the Ponytail skill for Claude Code

JetBrains MythBusters tested the Ponytail skill for Claude Code
Before that, they analyzed Caveman. Its promised 65% token savings turned into 8.5%, with no cost reduction.
Then came RTK, claiming up to 90% savings. In practice, some tasks became more expensive.
The new review covers Ponytail. Its trick is finding an existing solution before writing code. Tests showed 15% less code, 10% lower costs, 11% faster execution, with no quality loss.
✅ Myth confirmed.