OpenAI, originally a research lab, now makes its AI models usable through two main paths: direct products and developer APIs. On the product side, ChatGPT is the star—a conversational tool that helps with writing, learning, brainstorming, and planning, with enterprise versions offering extra controls. Codex is another product, built specifically for coding tasks like debugging and refactoring. For developers, the OpenAI API provides programmable access to models for generating text, images, or code, enabling custom apps at any scale. The big idea is to make powerful AI both accessible and safe through thoughtful design and safeguards. Why it matters: As AI moves from research to everyday use, OpenAI’s dual approach—consumer-friendly apps and flexible developer tools—shows how the technology is becoming as common and essential as the internet or smartphones.