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NVIDIA Nemotron 3 Ultra is here: a 550-billion-parameter open-source AI model, 1 million token context window, released free with weights, training data, and full recipes to take on DeepSeek V4, Kimi K2.6, and Qwen 3.5. Announced by Jensen Huang at Computex on June 2, 2026, this is NVIDIA's answer to Meta walking away from open source. Spotlight Moments: ⚡Jensen Huang drops Nemotron 3 Ultra at Computex, weights hit Hugging Face two days later ⚡550B total parameters, 55B active per token, 20 trillion training tokens in NVFP4 on Blackwell ⚡Meta launches Muse Spark, goes proprietary, and abandons the American open-source flag ⚡Hybrid Mamba-Attention plus LatentMoE architecture makes a 1M token context actually usable ⚡Kimi K2.6 scores higher on the Intelligence Index, but Nemotron wins on throughput and cost ⚡OpenMDW-1.1 license ships 50M SFT samples, 2M RL tasks, and 55 RL environments Chapters :- 0:00 A New Titan Enters the Open Source Arena 0:59 Decoding the Headline Performance Numbers 2:59 The Strategic Vacuum Left by Meta 4:08 Hybrid Mamba and the Future of Efficiency 7:54 The Reality Check on Benchmark Performance Suggestions for some other Technical Content:- 1. TNvidia's New Peta-Flop $3,000 "AI Beast" Has Apple Terrified For Mac Mini's Future! https://www.youtube.com/watch?v=yRiCvbNgOKA&t=62s 2. This New Chip Factory Should Terrify TSMC https://www.youtube.com/watch?v=JZn5RLXQFtg Channel Link for Subscription https://www.youtube.com/@UCiwcrCY6sJe052nS77_c4lw #nvidia #Nemotron3Ultra #opensourceai #jensenhuang #deepseek #kimik2 #blackwell #aimodels