Here is a natural, directory-style description that hits your requirements for...

https://www.tool-bookmarks.win/stop-relying-on-a-single-ai-suprmind-lets-gpt-claude-gemini-grok-and

Here is a natural, directory-style description that hits your requirements for clarity and specific value: "Suprmind puts GPT, Claude, Gemini, Grok, and Perplexity into one conversation to help you stress-test your ideas