OpenRouter simplifies access to many models through a single API, but each call...

https://lanesniceblog.scriblorax.com/posts/why-do-multi-model-tools-feel-inconsistent-even-with-the-same-prompt

OpenRouter simplifies access to many models through a single API, but each call starts fresh, so you lose context between requests. Suprmind handles multiple models in sequence, keeping the conversation flowing without resets