The most unrealistic deadline I got was the project must complete within 16 hours.

Setting: Freelance
Did I accept this? No
Client budget: 10 usd
What is the project? A iOS app which is the a combination of all LLM into one, like a clone of Poe. The API key must use my own because client refused to pay. I negotiate about the project, explain to him why this project, deadline and the budget is not aligned He said " Now everything can be done by using AI, why are yoh cheating me, i will report you" ( I was like report what?) I rejected the gig, then day's later my email junk folder is occupied with racist content and insulting me.

So yea. This is the whole story. This project is doable, just a wrapper. I don't mind if client will pay for all the API , the pay and dealings is logical.