Suprmind is a paid, web-based platform offering multi-model decision...

https://mill-wiki.win/index.php/What_Should_I_Look_For_in_a_Multi-Model_AI_Chat_Before_Paying%3F

Suprmind is a paid, web-based platform offering multi-model decision intelligence chat. It lets you interact with five different AI models—GPT, Claude, Gemini, Grok, and Perplexity—side-by-side