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

https://wiki-global.win/index.php/First_Principles_Mode:_Is_It_Useful_or_Just_a_Gimmick%3F

Suprmind offers a multi-AI chat platform combining GPT, Claude, and Gemini models in one place. At $19 a month, it’s a cost-effective alternative to ChatGPT Plus’s $20