The documentation is too lacking

[qingliaowu]

Yes, this is undocumented.

Related post:

Files.list() limitations?

The limit on file list return you report is undocumented. This seems like a case where you must (anyway) be keeping a local database of what you’ve uploaded and the purpose, as there is no metadata and no query you can perform besides sending a purpose. (Not that I didn’t communicate that need for metadata upon which a subsearch could be done to OpenAI months ago…) Trying some random queries like assistants supports; like you say, no difference: url = f"https://api.openai.com/v1/files?purpose…