Open AI changed rules, so you really need to buy any plan to use API. Personally, I prepaid $5, it's enough for half of year.
When I try it from time to time, it very often ends with request timeout. There is too many request and they prefer users with prepaid ChatGPT plus and their web interface before the rest. So I can't recommend to spent money for it. -- <https://forum.pspad.com/read.php?2,78802,78803> PSPad freeware editor https://www.pspad.com
