OpenAI is creating a new, more expensive tier for its flagship chatbot ChatGPT, and is bringing its “reasoning” model series out of preview with an update.The company is releasing the full version of its o1 model (replacing o1-preview), which was initially released as a limited preview in September (code-named ‘Strawberry’). The new model will be available for ChatGPT Plus and Team users today, while Enterprise and Edu users will have access to it starting next week.The company is also introduci...