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

https://www.charliebookmarks.win/suprmind-offers-a-fresh-take-for-users-seeking-more-than-grok-it-combines-grok

Suprmind offers a way to use Grok alongside GPT, Claude, Gemini, and Perplexity in a single thread, making it easier to compare answers side by side. Plans start at $19 with the Spark tier and include a 7-day trial with no credit card required