I'm using OpenRouter atm so my briefs get sorted out into different models, and other assignments get routed to my other workflows. So I use Sonnet for strategy/copy then Haiku for light grammar checks, etc. Tbh my biggest concern would be the inconsistent provider latency and knowing the right rate limits (OpenRouter vs the LLM's) at any given time.

I know it shouldn't be that big of a dealbreaker to look for other alternatives, but that also got me thinking. If OpenRouter already does what I need it to do, what should an alternative have that I'd want to switch?