Stop asking ChatGPT for stock predictions. It’s the fastest way to blow up your account. In this no-nonsense breakdown, we dismantle the "Big 5" AI models and assign them their actual jobs on a trading desk. We explain why Grok is your sentiment wire, why ChatGPT is your quant (if you force it to code), why Gemini is your research intern, and why Claude is the risk manager that stops you from being an idiot. No tech hype. No fluff. Just the raw utility you need to find an edge in 2026.