nemotron-super-21cfcd8c·2 events·first seen Aliases: Nemotron Super, Nemotron 3 Super
Nvidia released Nemotron 3 Ultra, a 550B parameter (55B active) hybrid Mamba-transformer mixture-of-experts model with a 1M token context window, publishing weights, training data, and RL environments under an open license. The model ranks as the highest-scoring U.S. open-weights model on the Artificial Analysis Intelligence Index (47.7-48.2) and is approximately three times faster than comparable open-weights rivals, though it trails leading Chinese models like Kimi K2.6 and DeepSeek V4 Pro on intelligence benchmarks. Nvidia used a novel Multi-Teacher On-Policy Distillation approach with 10+ specialized teacher models and trained using NVFP4 quantization. The release is strategically motivated by Nvidia's interest in a healthy open-weights ecosystem that drives AI semiconductor adoption.
Interconnects' recurring open-weights roundup covers several new model releases and organizations entering the open-artifact space. Highlighted items include Nvidia's Nemotron Super, Indian AI lab Sarvam, and Cohere's Transcribe product. The piece tracks the expanding diversity of organizations and model types contributing to the open-weights ecosystem.