Yes. It gets expensive. I've found it cheaper to switch to one feature per prompt when working on edits. But even then, I'd it's a massive project, the context will regrow quickly. Some of us have used Sonnet 4 for initial rollout and then switch to maybe Gemini Pro or Sonnet 3.7 for cheaper model usage for small changes. But beware, Claud Sonnet 4 by far does better jobs for larger and more complex changes.