My understanding (based on the wording that OpenAI itself uses) is that it still uses OCR tech behind the scenes. It seems like they have developed some models to better comprehend the same OCR scanned content that others produce.
Apple's "live text" OCR gave, on 2 lines of a curved, tilted, low-res image:
Sert. size 1 Tosp (209)
Total Sugars 12g
Id. 9 Aded Supars 195%