Suprmind lets you run prompts against GPT, Claude, Gemini, Grok, and Perplexity...

https://www.novabookmarks.win/suprmind-lets-gpt-claude-gemini-grok-and-perplexity-debate-your-prompts-in

Suprmind lets you run prompts against GPT, Claude, Gemini, Grok, and Perplexity in one conversation. By making these models challenge each other, you catch blind spots you’d miss alone. Start a free trial; full access is only $4/month.