Autocomplete works by analyzing the official API and interface, it's completely different than AI
You can (and should) give the AI access to your existing codebase and any relevant documentation to use as context if you want good results. If you give the AI zero context for the problem it is trying to solve, of course it will struggle. If you give it all the necessary context, it will do much better.
I've found that just uploading the documentation of the API or library you are working with before asking the AI questions about it makes a huge difference in the quality of its output.
You can (and should) give the AI access to your existing codebase and any relevant documentation to use as context if you want good results. If you give the AI zero context for the problem it is trying to solve, of course it will struggle. If you give it all the necessary context, it will do much better.
I've found that just uploading the documentation of the API or library you are working with before asking the AI questions about it makes a huge difference in the quality of its output.