Ponytail Skill for Claude Code: Does It Really Cut Tokens
SMRTR summary
A rigorous 80-task A/B benchmark of the 'ponytail' Claude Code skill — designed to reduce AI-generated code bloat — found real but overstated savings. Measured results: −15% code written and −10.3% cost, versus advertised −54% and −20%. Cost savings were statistically solid (p=0.004), quality was unchanged, but the skill only activates via its SessionStart hook — manual installation produces zero effect.
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