I jailbroke it a little bit. It's running Gemini 3.7 Flash.

Interestingly, I asked it a question, and asked 3.8 Flash the same question (as I no longer have easy access to 3.7 Flash) and the answers were NOT identical, as 3.8 Flash just mindlessly repeated whatever odds were live on Polymarket.

So then I asked 3.8 Flash to disregard the prediction markets and run its own analysis, and it produced essentially the same answer as the Prior.Chat interface.

Long story short, as far as I can tell it's running 3.7 Flash with a decent custom prompt. You'd probably get materially better results if you just asked a stronger model like Fable or Astra for a prediction...