You asked: “Explain “open weights” simply”

1. 1

   “Cloud AI runs on a provider’s computers; an open-weights model runs on a machine you control, so your text stays with you but the upkeep is yours.”

   Open weights vs cloud AI · Explainer · Data, privacy & security · 5 min
2. 2

   “A bookkeeping firm runs an open-weights model on an office computer to summarize client letters, so they never leave the building.”

   Open weights · Glossary

Quoted from The Distillery’s own pages. Check them against your situation, and ask a person when money, contracts or customers are involved.