As of yesterday, there was a 5-hour limit, so I had some work that I started today.
A little while ago, when I checked my usage, the 5-hour window didn't appear, so I kept refreshing, wondering if it was an error. On a whim, I searched and found out that openAI has removed the 5-hour limit.
There are pros and cons, but the fact that you can use up a week's worth in just one day is ㅎㄷㄷ (scary).