Suprmind lets you run GPT, Claude, Gemini, Grok, and Perplexity together in one...

https://source-wiki.win/index.php/How_to_Keep_Entities_and_Decisions_Remembered_Across_AI_Chats

Suprmind lets you run GPT, Claude, Gemini, Grok, and Perplexity together in one shared conversation, so the models can challenge each other and catch hallucinations