I’ve personally used CustomGPT.ai for a while, mainly to build a chatbot from my own documents. The overall experience was smooth, and once the bot was live, the responses felt accurate and grounded in the data I uploaded. It actually helped reduce repetitive questions. One thing I did notice early on was that organizing the data properly takes some effort at the start. After that initial setup, though, everything runs pretty well. This article explains the tool in a realistic way and matches closely with what I experienced.