OpenRouter acts as a model aggregator letting you pick from multiple models in...

https://atomic-wiki.win/index.php/How_to_Compare_LLM_Answers_Without_Getting_a_Noisy_Firehose

OpenRouter acts as a model aggregator letting you pick from multiple models in one place, but each request starts fresh with no context carryover. Suprmind goes deeper by chaining models sequentially, keeping context between steps for more complex tasks