They mention the 25 messages per 3 hours limit, so I assume they're talking about the difference between GPT 3.5-turbo and GPT-4 that's available when you pay f

They mention the 25 messages per 3 hours limit, so I assume they're talking about the difference between GPT 3.5-turbo and GPT-4 that's available when you pay for ChatGPT Pro.