It’s easy to get 500-700k tokens in. I’ll drop research papers, a lot of work docs, get through a bunch of discussion, before writing a PRD-like doc of tasks to work from.
That generally seems right to me, given how much we hold in our heads when you’re discussing something with a coworker.
200k tk = 1/3 200k words = 1/300 1/3 200k pages