MAJOR BUG: Scanned PDFs are no longer working via the responses file input API

API Bugs
59

@OpenAI_Support

Hello,
Here is what I found so far.

  • Responses API + base 64 encoded text based PDF => document is read by the model

  • Responses API + base 64 encoded image based PDF => model can’t read anything from document (since 06/24/2025?)

  • Chat completions API + base 64 encoded text based PDF => document is read by the model

  • Chat completions API + base 64 encoded image based PDF => document is read by the model

It seems the image to text processing step previously performed by the Responses API is not applied anymore.

Please have a look
https://github.com/maiwenn/pdfAnalyzeDebug/blob/master/index.js