OpenAI Responses API and Agents SDK

New tools for building agents and tools

API

Developer Tools

SDK

New in this update:

1. Responses API

Replaces the need to stitch together multiple APIs manually. Supports multi-turn interactions and multiple tool calls in one request. Includes built-in tools: Web Search, File Search, and Computer Use.

2. Agents SDK (formerly Swarm):

Helps orchestrate multiple agents with handoffs. Auto-generates JSON schemas for function calling from Python functions. Built-in tracing and monitoring tools for debugging. Open-source and soon available for JavaScript.

3. Assistance API sunset in 2026:

Developers will have time to migrate to Responses API. Responses API is a superset of chat completions and assistants.