Google DeepMind expands AI Co-Scientist into a closed-loop laboratory agent

AI Co-Scientist plans experiments, runs lab equipment, and writes scientific papers, with reported experimentally validated materials and biology findings. Results include fabricated-result reduction from 46% to 4%, 98.7% harmful-direction rejection, and inference-time scaling that outperforms six frontier models, but benchmark-to-physician disagreement leaves reliability and reproducibility unresolved.