Suprmind offers a multi-AI chat platform combining GPT, Claude, Gemini, Grok,...

https://list-wiki.win/index.php/How_Do_I_Sign_Up_for_Suprmind_Spark_Trial_Step_by_Step%3F

Suprmind offers a multi-AI chat platform combining GPT, Claude, Gemini, Grok, and Perplexity in one place. At $19 a month, Spark is a dollar cheaper than ChatGPT Plus and lets you try it free for 7 days—no credit card needed