What is the difference between paid and free ChatGPT?

As a cryptocurrency and finance professional, I'm often curious about the nuances of emerging technologies. Could you elaborate on the key differences between paid and free ChatGPT? From a user's perspective, what advantages or disadvantages does each version offer? I'm particularly interested in how the paid version might provide additional functionalities or improvements in performance, if at all. Furthermore, how do these versions align with potential use cases in the realm of cryptocurrency and finance? Your insights would be greatly appreciated.