Inline images sent as raw base64 instead of data URI

[Jameswlepage]

Summary

In AbstractOpenAiCompatibleTextGenerationModel, inline images are sent using $file->getBase64Data() which returns raw base64. The OpenAI API's image_url.url field expects a data URI (data:image/png;base64,...).

Fix

Use $file->getDataUri() instead of $file->getBase64Data() when building the image_url payload.

Error

Bad Request (400) - Failed to download image from iVBORw0KGgoAAAANSUhEUg...
Image URL is invalid.

The API interprets raw base64 as a URL and tries to download it.

Note

getBase64Data() is correct for the audio input API which expects raw base64 with a separate format field. It's only wrong for images where the URL field needs the full data URI.