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

https://www.inter-bookmarks.win/suprmind-runs-gpt-claude-gemini-grok-and-perplexity-side-by-side-so-they

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