The United States and China held their first official AI dialogue under President Trump’s second administration in July 2026. The talks aimed to establish shared definitions for frontier AI models, discuss proliferation risks, and explore standards for model release. Neither side expected a sweeping agreement, but establishing working vocabulary represents progress in a sector where both nations compete intensely. AI has become central to US-China competition, with the US viewing AI dominance as critical to military and economic power and China prioritizing AI self-sufficiency. Talks focused on defining what constitutes “frontier” (compute thresholds, capability benchmarks) and addressing proliferation risks of AI tools becoming accessible to non-state actors, adversarial regimes, or terrorists. Dialogue is difficult because neither nation trusts the other; China views US technology restrictions as economic warfare, while the US views Chinese IP theft and forced tech transfer as unfair competition. First dialogues rarely produce treaties; success means both sides agree to continue talking. Longer-term, talks might yield agreements on model transparency, export controls, or crisis communication protocols. The broader context is Trump’s unpredictability, as previous US administrations pursued structured engagement while Trump has been transactional and confrontational.