At OpenAI’s developer conference in November 2024, the company showcased enhancements to its AI models and platform that developers and users had been eagerly awaiting. This recap highlights announcements such as GPT-4.5, an improved version of their flagship model offering faster responses and better reasoning on complex tasks. OpenAI also opened up a new function calling ability that lets ChatGPT directly interact with databases and tools more safely – a feature that can be transformative for business integrations. We explain these new capabilities in approachable terms and note OpenAI’s emphasis on safety (like improved content filtering to prevent bad outputs). Additionally, the DevDay introduced an expanded plugin ecosystem that allows ChatGPT to execute actions like booking travel or summarizing PDFs with user permission. In short, OpenAI’s latest updates continue to blur the line between an AI assistant and a reliable productivity aide, and we discuss what that means for developers planning to leverage these APIs.