Prior's predictive AI forecasts anything from sports to personal decisions
Predictive intelligence to anticipate anything.

Prior is a predictive intelligence platform that answers questions about future events, from sports and markets to business and personal matters. It gathers context through follow-up questions, researches public information, and reviews your past predictions to produce a forecast report with a calibrated probability, weighted scenarios, key drivers, and suggested actions. Free users get one prediction weekly; paid plans range from $29 to $499 per month. It is not financial, medical, legal, or betting advice.
Our goal is to create the most powerful predictive intelligence in existence.
- A_D_E_P_T
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...
- Xcelerate
I asked it to predict the first 1 KB of Chaitin’s constant. It hung, froze, then said I used up my free quota. Sounds about right.
- humoctopus
I asked who would win the 2028 US presidential election and it said Vance at 51% likelihood.
That's not an unreasonable prediction but it's a little bit of a cop-out, especially the 51% bit.
- johnnyo
I asked a question, server hung, then told me I had no more free questions without giving me an answer.
- sva_
You can just open a new private browser window for a new prediction. But I'm unsure about their value.
I asked it how many predictions it'll get right by Q4 2030 and it seems fairly confident in itself:
68%
Prior averages 71% to 75% directional quarterly accuracy by 2030, matching elite human forecasting teams.