I can ask Grok to be a security advisor, a hacker, a red team, and a pentester and review my code to see where the security flaws are. It does it. It comes with good finds and suggestions how to fix them. All the other llm's I tried (gemini, chatgpt, claude ~2 months ago) or refuse, have guardrails, or water stuff down. It is a shame...
So Grok is my code reviewer :)