This is super easy to test though (whether EXIF is being used). Open up Geoguessr app, take a screenshot, paste into O3. Doing this, O3 took too long (for the guessing period) but nailed 3 of 3 locations to within a kilometer.
Edit: An interesting nuance of modern OpenAI chat interface is the "access to all previous chats" element. When I attempted to test O4-mini using the same image -- I inspected the reasoning and spotted: "At first glance, the image looks like Ghana. Given the previous successful guess of Accra Ghana, let's start in that region".
Edit: An interesting nuance of modern OpenAI chat interface is the "access to all previous chats" element. When I attempted to test O4-mini using the same image -- I inspected the reasoning and spotted: "At first glance, the image looks like Ghana. Given the previous successful guess of Accra Ghana, let's start in that region".