When did you launch? Seems like very good revenue if you launched recently and already reached 2000/month considering the low price and high cost of the OpenAI API.
Edit: Your T&C says it was written in 2019, you can't possibly been running the project since then right? https://gpt.space/terms-of-service
Hence the additional questions :) Making $2k+ in just a month (GPT4 API access opened for invite-only) would mean a ton of users quickly, which is hard to believe.
Edit: Your T&C says it was written in 2019, you can't possibly been running the project since then right? https://gpt.space/terms-of-service