Suprmind.ai lets you query GPT, Claude, Gemini, Grok, and Perplexity...

https://list-wiki.win/index.php/Does_Suprmind.ai_Have_Knowledge_Graph_Integration,_or_Is_It_Just_Good_Marketing%3F

Suprmind.ai lets you query GPT, Claude, Gemini, Grok, and Perplexity simultaneously. It is designed for deep research, using Debate and Red Team modes to track disagreements and pressure-test your assumptions