Last week, OpenAI released a preview of its hotly anticipated new model, o1. We discuss what it has excelled at and how it could accelerate the timeline for building superintelligence. Then, we explain why Meta is making teenagers’ Instagram accounts private by default. And, finally, we chat with the New York Times reporter Karen Weise about why Amazon is forcing its corporate employees to go back to working in the office five days a week and whether other companies will follow suit. Guests:Karen Weise, a technology correspondent for The Times. Additional Reading:OpenAI Unveils New ChatGPT That Can Reason Through Math and ScienceInstagram, Facing Pressure Over Child Safety Online, Unveils Sweeping ChangesAmazon Tells Corporate Workers to Be Back in the Office 5 Days a Week We want to hear from you. Email us at hardfork@nytimes.com. Find “Hard Fork” on YouTube and TikTok. Subscribe today at nytimes.com/podcasts or on Apple Podcasts and Spotify. You can also subscribe via your favorite podcast app here https://www.nytimes.com/activate-access/audio?source=podcatcher. For more podcasts and narrated articles, download The New York Times app at nytimes.com/app.