**Frontier AI labs have not formalized a qualifying joint pacing agreement despite September 2026 public statements.** Dario Amodei’s “We Must Pace the Frontier” essay prompted supportive replies from Sam Altman, Elon Musk, and Demis Hassabis endorsing embedded third-party evaluators and coordination on safety, yet these remain individual commitments and ongoing working-group discussions rather than a binding pact capping compute, conditioning releases, or limiting recursive self-improvement across multiple labs. An antitrust lawsuit filed in late September highlights legal barriers to any such coordination, while Meta has explicitly rejected collective slowdowns. Traders assign 81% probability to “No” because recent activity shows rhetoric and unilateral steps without the explicit joint announcement the market requires by year-end. Upcoming catalysts include any new standards-body charter or regulatory clarity that could shift the consensus.