Anthropic's Claude Opus 5 Button Bug Becomes Browser Game
Milos Novovic, who works at a Norwegian business school, has turned a frustrating Claude Opus 5 interaction into a browser game called Opusfived. Players try to get the AI to make only the Add to Cart button blue. The model turns the Cancel button blue too, runs 23 agents in an investigation, triggers a usage-limit warning, and eventually adds an unwanted Terms of Use button.