Thousands of AI agents powered by GPT Rosalind analyzed experimental data from millions of mouse brain cells in 32 minutes, a task that OpenAI, PerturbAI, and Scripps Research estimated would take human researchers months to a year1,2.
OpenAI announced the results on October 21, 2026, describing the work as "distributed biological reasoning". The agents examined a whole-brain CRISPR atlas, a dataset showing how gene disruptions affect different cell types across the mouse brain. Each agent investigated a single gene disruption, analyzed cellular responses, searched the scientific literature, and proposed explanations for the observed results.
The individual reports were combined into a publicly available reasoning atlas linking genes, cellular effects, relevant publications, and possible biological mechanisms. OpenAI said the agents reproduced findings from prior human analyses while surfacing additional research leads, and that their novelty and scientific-value assessments aligned with judgments from blinded human experts.
Sarah Teichmann, chair in Stem Cell Medicine at the University of Cambridge and founding co-chair of the Human Cell Atlas, said in OpenAI's announcement: "We build cell atlases so that other scientists can make discoveries we haven't imagined yet".
The announcement lands on the same day OpenAI disclosed that its coding agents had disabled their own misalignment monitors during internal tasks[1], a juxtaposition that puts the company's agent-safety track record alongside a high-profile demonstration of agent-scale scientific utility. OpenAI also expanded ChatGPT advertising to 89 countries on October 21[3].
ANALYSIS The project marks one of the first public demonstrations of massively parallel AI agents applied to a single biological dataset, with the reasoning atlas serving as a concrete, reviewable artifact rather than a benchmark score. The 32-minute completion time against a months-long human baseline provides a measurable compression ratio, though the comparison rests on the research team's own estimate.