Grok 4.20 vs ChatGPT 5.5 vs Claude Opus 4.7 for writing X replies (tested on 100 hooks)
Side-by-side test of Grok 4.20, ChatGPT 5.5, and Claude Opus 4.7 on writing X (Twitter) replies. Which AI sounds most human, which gets flagged by Grok's algo, which is fastest in workflow.