Jensen Huang · Nvidia · China · U.S. · Decrypt
Nvidia Launches Its Best Open AI Model Yet—But Still Lags Behind China
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Jensen Huang walked onto the Computex stage in Taipei on Sunday, leather jacket on, and unveiled Nemotron 3 Ultra—Nvidia's largest open AI model ever and, at least for now, the smartest open-weight model built in America.
Key facts
- Independent evaluator Artificial Analysis, which partnered with Nvidia on the pre-release assessment, put Nemotron 3 Ultra at 48 on its Intelligence Index—a composite benchmark that aggregates 10
- On the vertical axis—intelligence—Nemotron 3 Ultra sits at 48 which is nice, but China's Kimi K2.6 from Moonshot AI sits at 54
- Nvidia also announced it is already working on Nemotron 4—the next generation—developed through the Nemotron Coalition, a group of eight AI labs including Mistral AI and Perplexity that Nvidia
- Nemotron 3 Super, released in March 2026 at 120 billion parameters, was already considered a solid open model for autonomous agents
Summary
NVIDIA unveiled Nemotron 3 Ultra at Computex on June 1, a 550-billion-parameter open-weight model. The model delivers over 300 tokens per second on a pre-release DeepInfra endpoint, running three to six times faster than Chinese rivals. But Kimi K2.6 from Moonshot AI still leads the open-weight intelligence ranking. The model packs roughly 550 billion total parameters but runs on only 55 billion active ones at any given moment, using a design called mixture-of-experts.