My LLM's LLM
I used to drive the specialist coding model directly: paste the problem, wait, paste the next. It worked, but I was the router.
Now I direct my main agent, and it decides when a problem is hard enough to hand to the specialist. The specialist grinds it headless and hands back a result. The main agent QA's it before I see it. My LLM has its own LLM.
The benefit is separation of concerns. The main agent holds the thread: history, intent, the shape of the day. The specialist holds only the problem in front of it. I talk to one interface, not two.
The trade-offs are real. The specialist can't ask questions mid-task. Delegation adds latency. The main agent can bottleneck, and I must trust its judgement on when to delegate and whether the result is good. Cost: a flat subscription for the everyday model (~£15/mo) plus usage-based credits for the specialist. Ballpark £15 to £60/mo.
The bottleneck moved from my time to the delegation layer's judgement. Worth it.