Custom models create the real product magic

Cursor is an AI-powered code editor built by Anysphere that helps software engineers write code more efficiently.

We definitely didn't expect to be doing any of our own model development. And at this point, every magic moment in Cursor involves a custom model in some way.

Because these models are so effective at this point, you want to start to tune them to certain types of outcomes. All of a sudden, these are these living organisms that just get better with the more interactions that happen. I think this is the new IP of every single company products that think and live and learn.

Models are only as good as their evals.