We found that gpt-4o is consistently hallucinating. Here is an example: [ https://platform.openai.com/playground/chat?models=gpt-4o&pr... ] In this case, we never mentioned any store location in Ringsted. However , gpt-4o still fakes a store in the address: Adresse: Ringstedet, Klosterparks Allé 10, 4100 Ringsted Åbningstider: Mandag-fredag: 9.30-19, Lørdag: 10-17, Søndag: 11-16 Tlf: 50603398 Email: ringsted4100@gmail.com This hallucination is quite consistent. The gpt-4-turbo or even gpt-3.5 model doesn't have the same issue and correctly acknolwedged that there is no store in this location.