{"data":{"id":"nvidia/nemotron-3-ultra-550b-a55b:batch","name":"NVIDIA: Nemotron 3 Ultra","created":1780551208,"description":"NVIDIA Nemotron 3 Ultra is an open frontier-reasoning and orchestration model from NVIDIA, with 55B active parameters out of 550B total (MoE). Built on a hybrid Transformer-Mamba mixture-of-experts architecture, it...","architecture":{"tokenizer":"Other","instruct_type":null,"modality":"text->text","input_modalities":["text"],"output_modalities":["text"]},"endpoints":[]}}