OpenAI Assistants API

OpenAI Assistants API v2 RAG + code interpreter.

Definition

Assistants API v2: Threads (persistent conversations), Messages, Runs, Vector Stores (RAG file search), File Search tool, Code Interpreter tool, Function Calling tool. OpenAI announced Responses API + Agents SDK (March 2025) as evolution. Assistants v2 remains supported until mid-2026.

Origin

OpenAI Inc., Assistants API v1 November 2023 (DevDay), v2 April 2024.

Usage

Widely adopted for building enterprise and consumer AI assistants. 2025 successor: Responses API + Agents SDK.

Related terms

• OpenAI — éditeur.
• Anthropic Claude API — concurrent.
• RAG — pattern flagship.