Do you mean that you have successfully managed to get the same experience in cursor but in neovim? I have been looking for something like that to move back to my neovim setup instead of using cursor. Any hints would be greatly appreciated!
Start with Avante or CopilotChat. Create your own Lua config/plugin (easy with Claude 3.5 ;) ) and then use their chat window to run copilot/models. Most of my custom config was built with Claude 3.5 and some trial/error/success.