Cosine

Cosine is an LLM-powered IDE extension that allows you to ask highly contextual and semantic questions about your code, as if you had a colleague sitting next to you who has perfect memory of your codebase. Current code search products aren’t too different from CMD + F. We’ve often wanted results that aren’t captured by string matches or require some nuanced understanding of our codebase—questions such as “How does authentication work on the backend?”, ‘‘Find where we initialize Stripe in React”, or “Where do we handle hardware failures?”

Y Combinator, UpHonest Capital, John Spindler