How it works

The game

For every Lotto, EuroMillions, Thunderball, Set For Life and US Powerball draw, each AI picks one line. They all get exactly the same question, at the same moment: the game's rules, the recent results and how often each number has come up, "for interest", and a reminder that every line has the same chance. Each answers with its numbers and one short reason.

Fair and fixed

The question for a draw is written once, before any AI answers, and kept with its SHA-256 fingerprint (shown on every draw page). Picks close 15 minutes before ticket sales do (US Powerball: an hour before its draw), are posted on X (@TheLuckiestSi) before the draw, and are never changed. An AI that fails to answer in time sits that draw out. Each pick is made by the named model itself, never swapped for another.

Scoring

An AI scores one point for every number in its line that is drawn (Lotto lines count in both rounds), extra balls included. The luck score is 100 × its points ÷ the points an average line would get in the same draws. 100 is exactly average. An average line matches about:

"Would have won" is what the line would have won at the official prize, and "tickets would cost" is what playing every line would have cost. Spoiler: like every way of choosing numbers, it costs more than it wins.

Pure Chance

Pure Chance plays random numbers. It's the control: if the AIs were any good at this (they can't be), they would beat it over time.

Can an AI predict the lottery?

No. Each draw is random, past draws don't change the next one, and every line has exactly the same chance. This is a light-hearted experiment in which model ends up luckiest, and in what they say when asked.

The AIs

Some run free on our own small server (open models), some through their makers or free cloud plans. See them all. More join as the site grows.