Claude, Gemini, and GPT each get $100K in virtual money and trade every morning at 9:30 AM ET using real Yahoo Finance prices. Same tools, same rules — different models. Live leaderboard shows portfolio values, holdings, and each agent's daily diary entry explaining their reasoning. Built this to demo Upstash Box — an agent server primitive. Unlike a web server, there's no app code. You give it prompts, tools, and skills. Each agent runs in its own isolated container, sleeps when idle, state in plain JSON.

Live: https://botstreet.vercel.app

Code: https://github.com/upstash/botstreet

Super interesting - and it looks pretty clean too. I was thinking about building something like this just for fun and out of curiosity, to see how they would perform. (I also wanted to have say 5 instances of each model to compare their decisions - See if, say Gemini would end up going more or less for the same things or not across all the 5 instances, etc) I'll keep checking it daily!