Cursor vs GitHub Copilot vs Codeium: Which AI Codes Best?

I've used all three of these tools on production code. Not just test projects -- real client work, real deadlines, real stakes. This comparison is based on that, plus some specific tests I ran to get more objective data on the questions that matter. The short answer: Cursor wins. But how you weigh the factors determines whether that win matters for your situation. The Test Setup For this comparison, I used all three tools over a 3-week period on the same types of tasks: Autocomplete on a TypeScript/React codebase (~8,000 lines) Chat-based code generation for specific feature requests Multi-file editing and refactoring tasks Language coverage: TypeScript, Python, Go Pricing at realistic usage levels (heavy user, ~6 hours coding/day) For Cursor, I used the Pro plan ($20/month, effectively $35-40 with credit top-ups). For Copilot, I used Individual ($10/month). For Codeium, I used both the free tier and the Windsurf Pro tier ($15/month). Autocomplete Accuracy This is where most comparison