(Minor grammar note: "OpenAI are" -- it should say "OpenAI is" -- because "OpenAI" is a name and therefore singular.)
Collective nouns!
They vary between British and American English. In this case, either would acceptable depending on your dialect.
Also very noticeable with sports teams.
American: “Team Spain is going to the final.”
British: “Team Spain are going to the final.”
https://editorsmanual.com/articles/collective-nouns-singular...
Apparently this is a British vs American English thing. I've decided to stay stubbornly British on this one.