DuelAI: Compete against AI to stay sharp

About

DuelAI lets you compete directly with Claude AI on identical coding challenges. You each receive the same problem at the same time. You code in an editor similar to VS Code while Claude creates its solution concurrently. Both submissions are executed against matching test cases and evaluated on correctness, speed, and code quality. Following each duel, Claude details its methodology to help you learn. Begin for free. A Pro plan is available for $6 per month, which includes a 7-day trial without needing a credit card.