Suprmind offers a unified workspace combining Claude, GPT, Gemini, Grok, and...

https://holdensimpressivethoughts.lumenforgex.com/posts/first-principles-mode-what-does-it-do-in-a-multi-ai-chat

Suprmind offers a unified workspace combining Claude, GPT, Gemini, Grok, and Perplexity in a single shared thread. It helps teams compare AI responses side-by-side efficiently. Plans start at $19/month with a 7-day trial—no credit card required