I'm a Claude Code user primarily. The best UI based orchestrator I've used is Zenflow by Zencoder.ai -- I am in no way affiliated with them, but their UI / tool can connect to any model or service you have. They offer their own model but I've not used it.

What I like is that the sessions are highly configurable from their plan.md which translates a md document into a process. So you can tweak and add steps. This is similar to some of the other workflow tools I've seen around hooks and such -- but presented in a way that is easy for me to use. I also like that it can update the plan.md as it goes to dynamically add steps and even add "hooks" as needed based on the problem.

Always sounds so interesting and then I do a search only to found out it's another product trying to sell you your 20th "AI credit package." I really don't see how these apps will last that long. I pay for the big three already - and no I don't want to cancel them just so I can use your product.

Aren't there 500+ aggregator services?