There is also NVIDIA Nemotron 3 Ultra, with 561B parameters, which was released a month ago. I do not know yet how smart it is, but the NVIDIA LLMs are very we

There is also NVIDIA Nemotron 3 Ultra, with 561B parameters, which was released a month ago. I do not know yet how smart it is, but the NVIDIA LLMs are very well optimized for fast inference (on their GPUs of course). Previously that was the biggest American open-weights LLM.