I'm surprised nobody is mentioning one of the largest factors. If you're a heavy user of chatGPT, the equivalent cost of using the smallest GPT4 model would run

I'm surprised nobody is mentioning one of the largest factors. If you're a heavy user of chatGPT, the equivalent cost of using the smallest GPT4 model would run you a hell of a lot more. The cost of the GPT-4 API is ballpark around $0.05 / 1000 tokens. If you want to include a rolling context window, you will easily hit 1000+ tokens if not a huge amount more. ChatGPT pro gives you 50 GPT-4 queries every three hours. If you're using it all day you might average about 100 daily queries. Using a dedicated GPT4 API would run you approximately five dollars a day for the same thing - that's $150 a month as opposed to flat cost of $20.