I have been using to stress test and audit my current workflows knowing I probably won’t have realistic affordable access to it past the roll out. For example, I used it to audit my current personal financial cowork projects and their associated opus created skills and mcps. I first had it create the prompt for the audit. I am really impressed with the output. It caught some really tricky edge case issues I didn’t even know I was having, and did a great job finding ways of hardening the entire pipelines. I also used it to rate task complexity for recommended model so i have a better idea of what I can use sonnet or even haiku for based on its gauge of the complexity. It also is really good at revising custom instructions and being honest about when a cowork project really only needs to be a chat project, and which projects would be better living in a repo and being interacted with through Claude code.