I found Suprmind really useful because it brings GPT, Claude, Gemini, Grok, and...

https://smart-wiki.win/index.php/Suprmind_Stopped_Feeling_Accurate_%E2%80%93_What_Should_I_Test%3F

I found Suprmind really useful because it brings GPT, Claude, Gemini, Grok, and Perplexity into a single chat where they can challenge each other’s answers. This makes fact-checking way faster and helps catch mistakes before they slip through