Error Uploading Text Files in ChatGPT Plus

Issue on every file upload, even a small text file, the error is:
I couldn’t access the uploaded file directly. Can you re-upload it, or copy and paste the full content here?

I’m having the same issue, specifically for text file uploads when using o1 or the o3-mini models.

Some additional details:

  • For me, all file upload types are working with GPT-4o.
  • Both o1 and the o3-mini models still correctly process images in my case. Only textual file uploads fail.


The contents of the file are as follows:

SELECT p.*, ad.state AS state
FROM person AS p
INNER JOIN address AS ad
  ON p.address_id = ad.id;

I’ve seen a few posts online about people having the same issue as well. Can’t think of a workaround for this unfortunately.

@michaelalanstuart Can you confirm whether your issue is limited to textual uploads on the reasoning models specifically?

I have the same problem. GPT doesn’t see text files. It does see image files. But on another account, everything is fine. A similar issue, but with all file types, happened about three months ago and lasted for almost a month. Tech support just responded with generic answers without any specifics.

I have this problem with all models. About two months ago, I had a similar issue, but with all file types. I created a bunch of new free accounts and used a trained bot from the paid account via a link. After some time, the problem started appearing in the new accounts as well. I would switch to the next one. The issue would come and go, and this went on for about a month until it disappeared completely.

Just tried again, the issue seems to be fixed for both o3-mini and o3-mini-high. I’m able to upload text files with both models now.

The reasoning message is interesting:

I am not sure if this page updated:

https://help.openai.com/en/articles/10258472-do-the-o1-and-o3-mini-models-support-file-uploads

What information seems to be missing from that support page?

From what I can tell, both that page and the File uploads FAQ accurately detail which file types can be processed by each GPT model (now that the upload issue is seemingly fixed).

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Yes, I just checked and it is working:

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