Why doesn't GPT4-Plus offer a weekly subscription option instead of a monthly one?

Why doesn’t GPT4-Plus offer a weekly subscription option instead of a monthly one? I just want to use it for a short period…
Because for most individuals, a monthly subscription is expensive without alternative ways to reduce the cost, especially when the usage frequency is low.

The answer is likely: because it could reduce the cost.

The kind of user that would sign up for a week would likely use a month’s worth in the pressure of their time alloted. For an ongoing subscription, the frequent billing would be a more constant reminder of the rent-seeking.

The OpenAI API for developers has a version that is more like “billed by minute-long subscriptions, monthly cost of continuous use $50,000”. Or around a few cents a question.