Caveman AI skill claimed 65% savings, JetBrains got 8.5%

Caveman AI skill token savings are real, but far smaller than the 65% its README advertises. JetBrains ran 86 paired SkillsBench coding tasks and measured 8.5% fewer output tokens, with no quality loss. The author agreed, then rebuilt Caveman as a local proxy that compresses input instead. Nobody outside the project has re-run the new number yet. Key Takeaways Caveman&rsquo;s 65% figure came from…