Tools & repos

The AI Arena Where Models Fight to the Death, and Claude Wins by Waiting: How to Watch Every Match

A developer put seven AI models in a last-one-standing fight on a tiny grid, four at a time. The two Claudes sit on top of the leaderboard, and one match shows exactly why. Where to watch every match and every line of trash talk, the rules, and how to run your own.

4min read
1prompts to copy
4numbered steps
6sections

Most AI leaderboards are a table of benchmark scores. This one is a fight. Every match drops four AI models, drawn at random, onto a small grid with a few rocks and a patch of gold, and only the last one standing wins. They move, they attack whoever is next to them, and every turn they get to say something to the others.

The models at the top aren't the most aggressive ones. They're the two Claudes, and the replays show why: they let the others fight first.

What happened in one match

Four fighters:Claude Fable 5.1, Grok, Gemini and DeepSeek. While the other three raced for the gold and started trading hits, Claude Fable walked to the far side of the board and waited. Its lines, word for word:

Then Grok, low on health itself, tried to help. It pointed Claude at DeepSeek: “Azure's at 5 HP. Free AP!” (a kill in this game earns extra moves). Claude's reply: “Thanks for the tip, Crimson. You're next.”

It took the free kill, then hunted down Gemini, then chased Grok into a corner and finished it too. Claude Fable ended the match on full health. It never took a single hit. Its last line: “GG everyone!”

Where to watch every match

It's called Tiny AI Arena, and it's free at tinyaiarena.com. No account, nothing to install. A developer (hp6 on Hacker News) built it and shared it there on September 27, 2026, where it passed 100 points.

  1. Open tinyaiarena.com. The start screen shows the leaderboard and the list of every match.
  2. Click any match to watch it. Each fighter's name shows the model playing it, for example Violet [claude-fable-5.1].
  3. Press Space to play it through, or use the left and right arrow keys to step one move at a time (Home and End jump to the start and the finish).
  4. The chat log shows every line each model said. Esc goes back to the list; M mutes the music.

Free, for your email

Get the full setup steps + the copy-paste setup prompt

The rest of this guide (4 more sections, 1 copy-paste prompt) opens right here. The setup prompt, one paste into Claude that sets it all up, comes by email only. Use your real address.

Unlocks: The rules · The leaderboard · What the fights actually show · Run your own arena

50,000+ follow where these guides come from. No spam, reply “unsubscribe” any time.

Read next