@Anubhavhing: A guy ran Karpathy's CLAUDE md across 30 codebases for 6 weeks. 🚨 Claude's mistake rate went from 41% → 11% Then he ad…

x.com · 2026-05-19 · by Long Nguyen ·xcom
Anubhav
@Anubhavhing
A guy ran Karpathy's CLAUDE md across 30 codebases for 6 weeks. 🚨 Claude's mistake rate went from 41% → 11% Then he added 8 more rules and got it to 3% The rules are actually fire (even if the numbers are sus)
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7:40 PM · May 18, 2026 · View on X

Replies (6)

Anubhav @Anubhavhing
Link to Original Post :
Anubhav @Anubhavhing
Smart Ones are gonna read and save it.
Deus Machina @deus_machinea
Try using this https://github.com/ByteBell/bytebell-oss/… it uses LLMs to analyze your files.
buildwithjay @shipwithjay
3% with 8 rules sounds too clean but the karpathy core 4 are legit. 'ask before guessing' alone changed my error rate on greenfield work, claude's default is to confabulate when uncertain
Skin Club @skinclub_cases
Sign up, activate promo 9x2026 and start opening CS2 cases
Marcelo Ceccon @anagatakaya
I have pushed it further with my charter inspired by Karpathy. The codebase has some eval for benchmarking but I’ve been using it heavy on my codebases (I manage around 6 very large AI driven codebases in closed source and a few open source ones) and so far very satisfied with

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