OpenAI Assistants API

The Assistants API is a high-level framework for building stateful, tool-equipped AI assistants with persistent conversation memory (Threads) and built-in capabilities like Code Interpreter and File Search.

This API simplifies complex AI development: It provides a structured, stateful way to create AI helpers (Assistants) with defined instructions, models (e.g., GPT-4o), and tools. The core objects are Assistants, Threads (for persistent conversation history), Messages, and Runs (the execution step). This abstraction manages conversation context and tool integration automatically, meaning developers write less code for features like Code Interpreter, File Search (Retrieval), and Function calling. Focus on the user experience; the API handles the technical overhead of state management and complex tool orchestration.

https://platform.openai.com/docs/api-reference/assistants