What I heard was they had one two years ago and decided to sit on it.
Remember that ChatGPT's core competence is bullshitting; it's a huge mistake to say that it "hallucinates" when it gets wrong answers because it does the exact same thing when it is right and when it is wrong. It's just right sometimes and other times it is wrong. It's unlike human perception where hallucination really is a disease process.
Microsoft jumped in with both feet because the core of their market has always been products that make people feel like they're productive when they are screwing up... Like Excel.
