Comment by bfeynman

The reason is abundantly clear. Cursor was just a GPT wrapper with a nice UI/UX (which was very nice when it came out) it has some other models like autocomplete as well, but its still a wrapper. OpenAI and Anthropic build and train models specifically to work via CLI driven processes, which is why they are so much better now. Cursor is basically dead as I'm sure they realized they get much better performance with the CLI/agentic approach.