Suprmind offers a way to use Grok alongside GPT, Claude, Gemini, and Perplexity...

https://www.bestbookmarks.win/suprmind-offers-an-all-in-one-chat-experience-that-keeps-grok-plus-adds-gpt

Suprmind offers a way to use Grok alongside GPT, Claude, Gemini, and Perplexity in a single conversation thread. This means you can compare answers easily without switching apps