[internet101010]

Pay as you go is better for all but the heaviest of users. The low cost per task and topping up a balance make it one less thing to think about, one less monthly fee, and will almost certainly result in cheaper cost per month.

It's the same reason why I use api keys from all of the LLM providers rather than pay monthly fees to any one individual company. It's $5-10/mo vs. ~$80/mo.