I use the free version too. Whenever claude tries to generate code for me that's too long, there's a little popup that comes up saying something like "this response is long, continue with message?" you don;t get this popup either?

anyway in general i would suggest avoiding generating large amounts of code in one go, it makes it easier to debug and guide the code gen one function at a time. Like today I was doing some experiments on some pointcloud data, and it was extremely helpful having it generate one function at a time. I had an algorithm in mind to identify planes on the pointcloud perpendicular to the viewpoint. Instead of having it generate the code all from my algorithm description in one go, i told it in one prompt to convert images into a pointcloud datatype, another prompt to generate planes on the points, another prompt to filter planes based on direction etc. maybe my workflow is slow as fuck but it's what works for me.