OpenAI invested substantial engineering effort in offering a large-scale ChatGPT free tier and making memory available to free users.

“productivity if you're the executive individual contributor whatever your role is then it is much easier to say peak intelligence and really as long as you're getting returns to paying more it's worthwhile to throw more computer at it and so I think that that is the main distinction is really around cost and we've seen this in chat GPT right that chat GPT we put in a lot of effort to have the largest scale free tier and bringing things like memory”