STEVINATOR

AI experiments / 14 published comparisons

Compare what models actually produce.

Identical prompts, preserved first responses, and model names hidden until after the vote. Inspect the real outputs side by side and decide what worked.

Enter the top experiment Read the method
01Precomputed

Published artifacts, not live API calls.

02One shot

The first response is the final response.

03Blind vote

Choose the output before seeing the model.

Published experiments

Showdown archive

Practical builds, visual tests, and small questions that expose how models interpret the same request.

RUN 01

Gotcha

Date Math Without Timezone Bugs

Seven date questions with exact right answers. Off-by-one errors from timezone handling show up immediately.
6 models
RUN 02

Gotcha

Four Analog Clocks

Drawing a clock is easy. Putting the hour hand in the right place at 11:55 is where models fall over.
6 models
RUN 03

Build

Accessible Booking Form

Six models build a booking demo. Try it without a mouse: labels, validation, focus and error recovery all matter.
6 models
RUN 04

Build

Chess Rules, Not Just a Board

Any model can draw 64 squares. Castling, en passant and promotion are where the real rules engine shows.
6 models
RUN 05

Build

Mini Spreadsheet

A spreadsheet that looks right is easy. Can six models make formulas, dependencies and circular-reference errors work?
6 models
RUN 06

Build

Sort This Table Correctly

Mixed numbers, blanks and N/A in one column. Stable ordering and missing values are where sorting quietly breaks.
6 models
RUN 07

Build

Rotating Hexagon Physics

Six models simulate a bouncing ball inside rotating walls. Does the physics hold up when you change the controls?
6 models
RUN 08

Build

Fix the Broken App

The same buggy expense tracker goes to six models. Test decimal totals, filtered deletion, reset and literal text handling.
6 models
RUN 09

Build

Snake Game

Six models get one shot at a playable browser Snake game.
6 models
RUN 10

Build

Fake Startup Landing Page

A fictional AI dog-walking startup landing page, generated in one shot.
6 models
RUN 11

Recreate

iOS Calculator Clone

Six models try to recreate the Apple calculator as a single HTML file.
6 models
RUN 12

Gotcha

Pelican On A Bicycle

A visual gotcha: can the model draw a recognizable pelican riding a bicycle?
6 models
RUN 13

Gotcha

Count The R's

A tiny deterministic gotcha with an embarrassingly clear answer.
6 models
RUN 14

Creative

Roast My Code

A personality test that still has to spot the real async bug.
6 models