Do you have to pay for ChatGPT 4?

Hello there, I was wondering about the pricing structure for ChatGPT 4. Is it a free service, or do users have to pay for it? If there is a cost associated with it, could you please elaborate on the pricing plans available? Additionally, are there any free trials or limited versions available for users to try out before making a commitment? I'm quite interested in exploring this technology and would appreciate any information you could provide. Thank you!