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OpenAI Assistants API

OpenAI's API for building stateful AI assistants with persistent threads, tools, and file handling.

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Overview

OpenAI’s API for building stateful AI assistants with persistent threads, tools, and file handling.

Details

OpenAI Assistants API provides infrastructure for building stateful AI assistants with persistent conversation threads, code interpreter, file search (RAG), and function calling, abstracting much of the agent execution complexity. The Assistants API has been gradually consolidated with the broader Responses API as OpenAI’s agent infrastructure evolves.

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runtime, platform, openai, api