OpenRouter acts as a model aggregator letting you easily switch between models...

https://www.paste-bookmarks.win/openrouter-works-like-a-model-aggregator-by-routing-your-request-to-one-ai-at-a

OpenRouter acts as a model aggregator letting you easily switch between models but each call resets the context. Suprmind’s multi-model orchestrator lets you chain models sequentially, keeping context alive throughout