😮 How Anthropic Made Claude's Apps 3x Faster in Two Weeks

A grab bag of performance lessons from a sprint that cut p75 'time-to-typeable' from 3.1s to 0.55s. Em dashes (the irony!) pushed V8 onto a slower regex path, a stray location.reload() caused half a million hidden reloads a day, and more.

Wang, Attard, and G (Anthropic)