Suprmind offers a unified chat experience that combines Grok with GPT, Claude,...

https://garrettsinsightfulchat.wordcanopy.com/posts/m-a-pre-mortem-in-90-minutes-what-does-that-output-look-like

Suprmind offers a unified chat experience that combines Grok with GPT, Claude, Gemini, and Perplexity all in one thread. You can try the $19 Spark plan or upgrade to $45 Pro, both with a 7-day trial that doesn’t require a credit card