OpenAIGuides & TipsOfficial Docs
Responses API migration guide for agent apps
Developers can unify chat and tools with less plumbing.
Key Points
- 1Chat Completions remains supported
- 2Responses is designed for built-in tools
- 3Explains stateful context options
- 4Assistants API sunset is called out
OpenAI published a migration guide to the Responses API from Chat Completions. It explains built-in tool use and an agent-style loop within a single request. New apps can standardize on Responses more easily. Note the Assistants API sunset timeline.