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

https://www.wall-bookmarkings.win/openrouter-is-great-if-you-want-simple-access-to-multiple-models-at-once-but

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