NVIDIA's New Free AI - A Gift To All of Us
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NVIDIA released Nemotron 3 Ultra, a 550-billion-parameter open AI model under the Open MDW license (comparable to Apache 2.0 for ML weights), making it one of the most openly licensed models from a major company. The model uses a mixture-of-experts architecture (only ~10% of parameters active per token), Mamba layers for efficient memory, NVFP4 low-precision arithmetic, and speculative decoding for blazing speed. In hands-on testing, it excelled at quick scripting, terminal tasks, and file organization, but struggled with complex coding tasks like graphics simulations and game development. It supports a 1-million-token context window but lacks vision/multimodal capabilities and requires hundreds of gigabytes of GPU memory, making local deployment impractical for most users. The author recommends using it via cloud GPU providers like Lambda.