Cursor is pretty bad in my experience. I don't know why because I find Windsurf better and they both use Claude.

Regardless, Gemini 2.5 Pro is far far better and I use that with open-source free Roo Code. You can use the Gemini 2.5 Pro experimental model for free (rate limited) to get a completely free experience and taste for it.

Cursor was great and started is off, but others took notice and now they're all more or less the same. It comes down to UX and preference, but I think Windsurf and Roo Code just did a better job here than Cursor, personally.