OpenAI Assistants API

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Agent 介绍

Guidance for migrating from the Assistants API to the Responses API, including side-by-side comparisons and updated patterns. Migrate from the Assistants API to the Responses API. We’re moving from the Assistants API to the new Responses API for a simpler and more flexible mental model. Responses are simpler—send input items and get output items back. With the Responses API, you also get better performance and new features like deep research , MCP , and computer use . This change also lets you manage conversations instead of passing back previous_response_id . Responses send input items or use a conversation object and receive output items; tool call loops are explicitly managed Assistants were persistent API objects that bundled model choice, instructions, and tool declarations—created and managed entirely through the API. Their replacement, prompts, can only be created in the dashboard, where you can version them as you develop your product. Think of a prompt as a versioned behavioral profile to plug into either Responses or Realtime API.

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