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OpenAI Agents SDK Offers Simplified Framework for Building Multi-Agent AI Systems

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OpenAI released a stable version of its Agents SDK, formerly known as Swarm, in early 2026 as a Python library designed for building multi-agent AI systems. The SDK is built around five core primitives — Agents, Runner, Tools, Handoffs, and Guardrails — intended to give developers a lightweight alternative to more abstraction-heavy frameworks like LangChain or CrewAI. Developers can convert standard Python functions into callable agent tools using a decorator, while built-in support for web search and a sandboxed code interpreter expands agent capabilities. A handoff feature allows one agent to transfer a conversation with full context to a specialist agent, enabling more complex workflows. The SDK also supports non-OpenAI models through LiteLLM integration, broadening its compatibility beyond OpenAI's own infrastructure.

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