Musk shows Grok 4.7 doing real engineering at Tesla, shipping FSD features overnight
elonmusk · x · 2026-09-22
Elon Musk shared a post from Grok Build team member yuntatsai detailing Grok 4.7 doing real engineering work at Tesla. The team recently optimized the 4.7 harness: better presentation with less slop, improved self-validation, more efficient thinking, better long-horizon monitoring, and stronger VLM/multimodal performance. The poster says several FSD and Cybercab features they shipped were built by overnight agents.
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