What Happened
AI researcher Kimmo Kärkkäinen (@kimmonismus) has expressed significant excitement for NVIDIA's upcoming Nemotron Ultra series of large language models, calling them "insane open source models" that are "still underrated." The tweet links to a GitHub repository (nv-mistral/nemotron-ultra) that appears to be the project's official home, though it is currently private or restricted.
This announcement follows NVIDIA's established pattern of releasing powerful, open-source foundation models, such as the Nemotron-4 340B family. The "Ultra" designation suggests this new series aims to push the boundaries of scale, capability, or efficiency beyond NVIDIA's previous offerings.
Context
NVIDIA's Nemotron project is its flagship initiative for developing and releasing state-of-the-art, open-weight LLMs. The previous major release, Nemotron-4 340B, included base, instruction-tuned, and reward model variants, trained on 9 trillion tokens and competitive with models like Llama 3 70B and Mixtral 8x22B.
The move to develop an "Ultra" tier indicates a focus on the highest performance tier, potentially targeting or surpassing the capabilities of leading proprietary models like GPT-4, Claude 3 Opus, or Gemini Ultra, but with open weights. The success of models like Meta's Llama 3 has demonstrated the massive industry demand for high-quality, commercially usable open models, a market NVIDIA is clearly targeting.
Given NVIDIA's unparalleled access to its own AI supercomputing infrastructure (e.g., DGX Cloud, Selene), the Nemotron Ultra models are likely to be trained at unprecedented scale, potentially leveraging novel architectures or training methodologies developed in-house. The project's existence confirms NVIDIA's deepening commitment to being a primary source of frontier AI models, not just the hardware provider for them.
Article length is limited due to the source being a single tweet pointing to a non-public repository. Specific technical details, model sizes, benchmarks, and release timelines are not yet available.
