Recent calls for frontier AI labs to coordinate on slowing capability gains, sparked by Anthropic CEO Dario Amodei’s September 2026 essay, produced public endorsements from OpenAI, xAI, and Google DeepMind leaders plus a July employee statement urging government-backed pacing tools. These efforts yielded only the late-September White House Accord, a voluntary one-page commitment to internal controls, external audits, and regular standards meetings signed by OpenAI, Anthropic, Google, Meta, xAI, and Nvidia. Antitrust lawsuits filed shortly afterward, plus the accord’s explicitly non-binding language and lack of explicit slowdown targets or enforcement, have reinforced trader skepticism that a substantive joint pacing agreement will materialize before year-end.