Master the new unified API that replaces Chat Completions and Assistants for building agentic applications. Part of the free OpenAI Academy — every lesson below is open to everyone, no signup required.
The New Standard (2025–2026) The Responses API ( /v1/responses ) is OpenAI's new unified interface for building AI applications. It replaces both the...
Tools That Ship with the API The Responses API includes powerful built-in tools that require zero setup — just enable them in your request. Built-in T...
Persistent Conversations Unlike Chat Completions where you manually manage message history, the Responses API can persist conversations server-side. /...