AI Code Generation · Head to head
Cursor vs Windsurf
Both products compete in AI Code Generation. AI code generation software uses large language models to write, complete, refactor, and explain code as developers work. It ranges from inline autocomplete inside an editor to agentic tools that can plan, write, and run multi-file changes on their own. Here are the facts the B4 Index maintains on each, side by side.
The two files, side by side
The decision underneath the comparison
Choosing between Cursor and Windsurf assumes you're buying AI Code Generation at all. That's the prior question, and the B4 Index scores it on two axes: how much AI Code Generation differentiates you, and how far AI has come at building it. Read the build-versus-buy considerations for AI Code Generation before you shortlist either product.