{"id":"2057500316971495935","url":"https://x.com/hanakoxbt/status/2057500316971495935","text":"Andrej Karpathy built the most watched AI repo of the year in one month, wrote most of it by hand, and just explained why he rejected vibe coding\n\nhe used autocomplete, not agents\n\nhis reasoning: LLMs have too many cognitive deficits for code that has never been written before\n\nthey kept trying to force him into PyTorch's DDP container, he had a custom gradient sync implementation, the models couldn't internalize that\n\nthey kept bloating his code with try-catch statements, kept using deprecated APIs, kept trying to turn research code into a production codebase\n\nhe said typing English instructions is slower than just navigating to the right line and letting autocomplete finish it\n\n3 tiers of how people interact with code right now:\n\n> reject all LLMs and write from scratch, probably wrong\n> use autocomplete but stay the architect, his sweet spot\n> full vibe coding with agents, works for boilerplate, breaks on anything novel\n\nhe vibe-coded two things: a boilerplate report generator and a Rust tokenizer rewrite where he had Python tests to verify against\n\neverything else was hand-written with autocomplete\n\nthe part that matters for AI timelines: the main story about AI exploding to superintelligence depends on AI automating AI research, Karpathy says that's exactly what models are worst at\n\nthey know things, they don't fully know how to integrate them into your repo, your style, your assumptions\n\nhis current oracle: GPT-5 Pro, copy-paste the entire repo, ask questions, often surprisingly good compared to a year ago\n\nbut his verdict: the industry is making too big of a jump, it's slop, they're not coming to terms with it\n\nBookmark & Watch, then decide where you sit on the autonomy slider","author":{"name":"Hanako","username":"hanakoxbt","avatarUrl":"https://pbs.twimg.com/profile_images/1942867829016911872/zDosF-7X_200x200.jpg"},"createdAt":"Thu May 21 16:34:36 +0000 2026","engagement":{"replies":11,"retweets":6,"likes":48,"views":2133},"media":{"photos":[],"videos":[{"url":"https://video.twimg.com/amplify_video/2057492731748921344/vid/avc1/3834x2154/oyhU4mQ71fpNWN_n.mp4?tag=27","thumbnailUrl":"https://pbs.twimg.com/amplify_video_thumb/2057492731748921344/img/QEpHCQ0KglHEkK8e.jpg","width":3834,"height":2154,"duration":519.932}]},"quoteTweet":{"id":"2053116311132155938","url":"https://x.com/Mnilax/status/2053116311132155938","text":"","author":{"name":"Mnimiy","username":"Mnilax","avatarUrl":"https://pbs.twimg.com/profile_images/2007608177492217856/3gdItGwC_200x200.jpg"},"createdAt":"Sat May 09 14:14:08 +0000 2026"},"adhxContext":{"savedByCount":1,"publicTags":[],"previewUrl":"https://adhx.com/hanakoxbt/status/2057500316971495935"}}