That's not a very common pattern, to be honest. A bunch of people have been experimenting with automatic model routing recently but mainly as a cost optimizatio

That's not a very common pattern, to be honest. A bunch of people have been experimenting with automatic model routing recently but mainly as a cost optimization, since tokens for the best models have got expensive once you start piping millions of tokens through them. I haven't seen much evidence that model routing is being widely used yet. I think it's still more of an experimental mechanism right now.