Comment by theshrike79

The usual solution is a multi-tiered one.

First you use any LLM with a large context to write down the plan - preferably in a markdown file with checkboxes "- [ ] Task 1"

Then you can iterate on the plan and ask another LLM more focused on the subject matter to do the tasks one by one, which allows it to work without too much hallucination as the context is more focused.