The main difference between the Ninja OG901EU Woodfire Pro Connect XL Tis and the Ninja OG850 lies inSeveral key areas: - Size and capacity: The OG901EU is a tabletop grill with a larger grilling surface and capacity compared to the OG850. It offers more space for cooking food. - Functions and technology: The OG901EU comes with "Woodfire Pro Connect" technology, which offers better temperature control and the option to use wood chips for smoke flavouring. In contrast, the OG850 may offer less advanced functions in this regard. - Connectivity: The OG901EU has built-in connectivity that allows the grill to be controlled via an app, which is not the case with the OG850. - Price: The OG901EU is generally more expensive than the OG850 due to the additional functions and larger size. These differences make the OG901EU a more comprehensive and technically advanced option compared to the OG850.