NVIDIA AI Releases Star Elastic: One Checkpoint that Contains 30B, 23B, and 12B Reasoning Models with Zero-Shot Slicing NVIDIA researchers have introduced Star Elastic, a post-training method that embeds multiple nested reasoning models—at 30B, 23B, and 12B parameter scales—inside a single checkpoint using a single training run. Applied to Nemotron Nano v3 (a hybrid Mamba–Transformer–MoE ➡️➡️➡️