Jev · System One · typed decisions only

Who winswhen the arena decides?

Battle Arena pits characters from anime, comics, and shows in a monochrome 1v1 stage. Jev — TypeSafe's System One model — evaluates both fighters against a rubric and returns a winner, a probability spread, and the edge that separates them.

Choose fighters How judging works

Choose two fighters

Mix any sources — an anime fighter can face a comic or a TV character. Selection order sets side A and side B.

Three moves

The judge does not write prose. It answers typed questions, and the code owns every weight and threshold — so a verdict is inspectable down to the dimension.

Pick two fighters

Choose from anime, comics, and shows. Every fighter carries the same normalized shape, so any two can be matched.

Jev reads the state

Both fighters are sent as one state with a bank of typed questions — a winner Choice, six comparative Scores, a coin-flip Noul.

Winner and edge

Jev returns calibrated probabilities. Your code weights the dimensions into a single signed edge you can rank and explain.