Nvidia Releases Nemotron 3 Ultra, Its Best Open-Weight AI Model, But China Still Leads
Nvidia released Nemotron 3 Ultra on June 1, 2026, its most capable open-weight AI model to date. Benchmark results place it ahead of every other American open-weight system by a wide margin. According to media reports, Nemotron 3 Ultra still trails the Chinese-led frontier despite its domestic lead.