Suprmind offers a unified interface 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 interface combining Claude, GPT, Gemini, Grok, and Perplexity in a single thread, letting you compare responses seamlessly