Why can't I download the file generated by Custom GPT? OpenAI has officially given a direct fix: first check whether Code Interpreter & Data Analysis is open in GPT. The Help Center explains that many custom GPTs can only "tell results" in conversations, but do not really have the ability to generate downloadable files; After opening this tool, it will output the real file. The official page is Why can't I download files generated by my custom GPT?.
Why did you report this mistake?
Many people think that GPT should automatically export files as long as it can calculate and write, and summarize. Actually not. Without a Code Interpreter, it might be able to write the table content, but the attachment generation link is not open, and you end up with just text, not a real file that can be downloaded.
Official advice on how to fix it
OpenAI's approach is clear: the owner of the GPT, or someone with editing rights, can enable Code Interpreter & Data Analysis. After enabling it, GPT can generate real files; If the file itself is too large, downloads are also affected by the 512MB limit.
If you're doing data analysis, weekly reports, presentations, or content with charts, this toggle is almost necessary. Without opening it, GPT can easily stay on the "I can say it, I can't get it down".