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

https://www.hotel-bookmarkings.win/suprmind-puts-gpt-claude-gemini-grok-and-perplexity-in-one-chat-letting

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.