Want to use the more advanced GPT-4 version of ChatGPT for free? Then Microsoft's Copilot AI is what you actually need.

ChatGPT has lots of different plans, models and services. But how much do they actually cost? We take a closer look.

Elon Musk and xAI have unveiled Grok, a new AI chatbot designed to rival ChatGPT. Is it any good and how do the two compare?