OpenAI NotFoundError: 'The model `o1-2024-12-17` does not exist or you do not have access to it.'

I’ve been trying to use the Agents SDK and have set my model to be o1 but I keep getting error message about how it doesn’t exist or that I don’t have access. I notice that in the settings for my project in the API platform I’m unable to add it to my allowed models as it doesn’t even show up for me to check it. If it matters, I’m a tier 1 user. Could someone please help me fix this or explain why it’s happening?