In today's debut of the '12 Days of Live Streaming' event, OpenAI announced two significant updates: the full version of the reasoning large model o1 and its advanced mode, along with a $200 monthly subscription service for ChatGPT Pro. The complete version of the o1 model will gradually be made available to ChatGPT Plus users and is designed to answer questions using an internal reasoning chain that is more aligned with human thought processes, enhancing the accuracy of answers to professional queries. Compared to the o1 preview version launched in September, the full version of o