Parag Agrawal's Parallel Launches 'Index' — Shapley Value-Based Compensation for Content Used by AI Agents

Stratechery·high signal

Former Twitter CEO Parag Agrawal's Parallel Web Systems ($2B valuation, $100M Series B) launched Index, a platform using game-theory Shapley values to estimate each content source's contribution to an AI agent's completed task and compensate accordingly. Launch partners include The Atlantic, Fortune, PitchBook, ZoomInfo, and independent creators like Packy McCormick. Rather than paying for access or citations alone, Index measures contribution to task completion — a new economic primitive for the agentic web.