Nvidia's new 9B model lets you toggle reasoning on and off
Nvidia just dropped Nemotron-Nano-9B-v2, a hybrid Mamba-Transformer model slimmed down to fit on a single A10 GPU. Developers can toggle reasoning traces on or off using simple /think tokens and dial in exact thinking budgets. It delivers up to 6x faster inference than similar transformers while outperforming Qwen3-8B across key benchmarks.