Suprmind lets you use GPT, Claude, Gemini, Grok, and Perplexity together in one...

https://www.bookmarking-fox.win/suprmind-is-a-smart-chat-platform-that-lets-you-interact-with-multiple-ai

Suprmind lets you use GPT, Claude, Gemini, Grok, and Perplexity together in one chat, making it easier to compare answers and keep track of disagreements