On December 6th, OpenAI's 12-day event opened. On the first day of the event, OpenAI founder Sam Altman said that today's release is the "full-blooded version" of the inference model o1 and ChatGPT Pro (monthly subscription fee of $200). According to the introduction, o1 is the smartest model in the world. Smarter, faster and more functional (e.g. multi-modal) than o1-preview. Now live in ChatGPT and will soon be available in the API. The newly launched ChatGPT Pro will be able to make full use of models and tools, including unlimited access to OpenAI o1 and a Pro-only version of o1.