A significant fraction of the money that people have paid for Generative AI has been for coding assistance. When I point to the positive uses of Generative AI, I invariably point to how GenAI serves as kind of valuable autocomplete for coding. AI lab employees for anecdotes on how much they believe access to AI tools is speeding them up.” But anecdotal evidence is hardly trustworthy. After task completion they estimated that task completion time was sped up by 20%. We expect AI tools provide greater productivity benefits in other settings (e.g.