What you'll learn

Building real applications with OpenAI models often means juggling separate APIs for basic chat, tool integrations, and conversation history, adding complexity before you've built any actual feature. In this course, OpenAI Responses API, you'll gain the ability to build applications on OpenAI's unified interface for model interactions. First, you'll explore the fundamentals of the Responses API, including basic request/response calls, reasoning-model support, and background mode for long-running requests. Next, you'll discover how to manage conversation state, chaining and forking turns, deleting stored responses, and understanding the real token-billing implications of stored history. Finally, you'll learn how to integrate built-in tools like web search and file search into your workflows, and how to combine multiple tools within a single call. When you're finished with this course, you'll have the skills and knowledge to build Responses API-powered applications that manage state and use built-in tools effectively.