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Documentation/Assistants

Assistants

Assistants API tools

Learn about the tools available for OpenAI Assistants, including file search, code interpreter, and function calling.

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After achieving feature parity in the Responses API, we've deprecated the Assistants API. It will shut down on August 26, 2026. Follow the migration guide↗ to update your integration. Learn more↗.

Overview

Assistants created using the Assistants API can be equipped with tools that allow them to perform more complex tasks or interact with your application. We provide built-in tools for assistants, but you can also define your own tools to extend their capabilities using Function Calling.

The Assistants API currently supports the following tools:

File Search

  Built-in RAG tool to process and search through files

Code Interpreter

  Write and run python code, process files and diverse data

Function Calling

  Use your own custom functions to interact with your application

Next steps