Pattern: Compute Capacity Deals Between AI Rivals Signal a New Infrastructure Sharing Layer

Simon Willison·medium signal

The Anthropic-SpaceX/xAI Colossus deal sets a precedent: AI companies that compete on models can share infrastructure when GPU supply is the binding constraint. The immediate developer impact is real — doubled Claude Code limits and removed peak-hour throttling. Expect more cross-competitor compute partnerships as demand outstrips single-company data center capacity, especially as multi-gigawatt facilities take years to build.