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

https://charlottesgreatchat.quantlynix.com/posts/first-principles-mode-is-it-useful-or-just-a-gimmick

Suprmind offers a smart multi-AI chat platform combining GPT, Claude, Gemini, Grok, and Perplexity models in one place. For $19 a month, Spark is a budget-friendly alternative to ChatGPT Plus at $20