US AI Framework Targets Closed-Source Models, Leaves Open Source Unregulated

The White House is exempting open-source models from regulation while creating a "frontier model" category for proprietary systems with state-of-the-art capabilities and national security implications. Companies can release models openly to avoid oversight; closed vendors absorb compliance costs their open-source competitors escape. Policymakers are betting the national security threat comes from concentrated, controlled capabilities, not distributed ones. This choice will shape competitive dynamics and likely accelerate open-weight model release as a regulatory workaround.