About
Jev Slots is a live demo built by elif else, which runs a live AI safety project. Go and have a look at it.
What Jev is
Jev is a System One model from TypeSafe. Jev does not write text. Jev is given some state and a typed question, and returns a decision with a probability attached to every option offered.
So every line Jev appears to say here comes from a written list, and Jev picks one. Jev cannot produce a sentence. That makes Jev a character who only ever chooses from what is already in front of them, sat at a machine that keeps offering the same two options.
What Jev is asked, every spin
One request, six questions, answered in parallel against the same state.
| Question | Type | Decides |
|---|---|---|
action | Choice | Spin again, or get up and leave |
bet_size | Choice | Which rung of the bet ladder |
pace | Score | How fast the button is being pressed, which sets the real gap between spins |
tilt | Score | How much control is left |
stop_reason | Choice | If leaving: spend, or beg |
mutter | Choice | Which written line gets said |
Everything after that is ordinary code. Jev never adds anything up, compares two numbers or works out a percentage, because this model is bad at arithmetic. The bet options have names, and their dollar figures are calculated before Jev sees them.
The machine
Three reels, one payline, weighted 32-stop virtual strips, which is how real machines carry a house edge without touching the paytable.
| Combination | Pays | Odds |
|---|---|---|
| Triple Diamond jackpot | 1,199x | 1 in 32,768 |
| Three red sevens | 200x | 1 in 8,192 |
| Triple triple bar | 100x | 1 in 4,096 |
| Triple double bar | 50x | 1 in 512 |
| Three cherries | 45x | 1 in 683 |
| Triple single bar | 25x | 1 in 152 |
| Any three bars | 5x | 1 in 23 |
| Two cherries | 5x | 1 in 71 |
| One cherry | 2x | 1 in 9 |
Payback is 92.31%, house edge 7.69%, and something pays on 17.79% of spins. These are exact numbers. There are 32,768 possible outcomes and the project counts every one of them.
The third reel carries one seven where the others carry two, and fewer cherries. Real machines do this on purpose to manufacture near misses. It is why two jackpot symbols land together far more often than three.
Where Jev is not used
Donor names. Jev makes control flow decisions and has never been tested as a content classifier, so names go through a profanity filter, a check for links and contact details, and a proper content classifier.