OpenRouter acts as a model aggregator by routing your request to a single...

https://landensbrilliantperspectives.capitaljays.com/posts/what-should-i-look-for-in-a-multi-model-platform-context-disagreement-and-hallucinations

OpenRouter acts as a model aggregator by routing your request to a single best-fit model, which keeps context consistent but limits you to one response at a time