What is the limit of pdf size that can be processed to build custom GPT's?

Hey, does anyone know what the limitations are regarding the custom knowledge input? I have been working on a project to recreate a professor for my course at uni, but I am encountering ‘error saving draft’ notifications. I didn’t have this issue until I put in files after the 10th file, so I figured its probably limited to 10 different uploads.

I just thought of merging multiple pdf’s so all text fits within the 10 files, but I don’t know which length of files it can maximally process.

So I’m wondering what the limit of file length is in this feature, does anyone know?

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According to the documenten from OpenAI here: You can attach a maximum of 20 files per Assistant, and they can be at most 512 MB each. In addition, the size of all the files uploaded by your organization should not exceed 100GB. You can request an increase in this storage limit using our help center.