OpenAI Agents SDK
Founded 2025
Build agentic AI apps in a lightweight, easy-to-use package with very few abstractions.
What it is
The OpenAI Agents SDK is a lightweight, open-source framework for orchestrating single- and multi-agent workflows around Agents, Handoffs, Guardrails, and Sessions, with built-in tracing. It is the successor to OpenAI's experimental Swarm SDK.
At a glance
7/7 facts sourced- Pricing
- The SDK is free and open source (MIT); you pay OpenAI (or the chosen provider's) API/token costs.source ↗
- Hosting model
- A self-deployed library (Python, with a TypeScript version too) that runs in your own process and infrastructure.source ↗
- Memory & state
- Sessions provide automatic conversation-history management across agent runs — a persistent working-context layer.source ↗
- MCP support
- Nativesource ↗
- Integrations
- Built-in tools (web search, file search, computer use via the Responses API), function tools, MCP servers, agent handoffs, and tracing/observability.source ↗
- Model providers
- OpenAI-first (uses the Responses API by default for OpenAI models) but provider-agnostic — supports 100+ other LLMs via LiteLLM and any-llm adapters.source ↗
- Open source
- Yessource ↗
Editorial scorecard
Overall 3.8 / 5
Our opinion — the same 0–5 rubric is applied to every platform, including Alfe. See the rubric.
Strengths
- Minimal, low-abstraction API with clear primitives (agents, handoffs, guardrails, sessions).
- Built-in tracing and native MCP support.
- Free and open source (MIT), and provider-agnostic via LiteLLM.
Trade-offs
- Optimized around OpenAI's Responses API — non-OpenAI providers go through adapters.
- Library-only, so you run your own infrastructure.
- A newer framework (2025) with a fast-moving API surface.
Our take
Editorial opinion — not a hands-on test resultIn our opinion, the OpenAI Agents SDK is a solid, unopinionated choice for teams building agentic workflows in Python who value a small API surface and good tracing. It is most frictionless if you are already on OpenAI models; other providers work through adapters. As with any library, memory beyond Sessions and production infrastructure are yours to own.
FAQ
- Can it use non-OpenAI models?
- Yes — via LiteLLM and any-llm adapters, it supports 100+ models, though OpenAI models are the default path.
- Does it manage conversation memory?
- Yes — Sessions automatically manage conversation history across runs.
Compare OpenAI Agents SDK
Sources
- OpenAI Agents SDK docs · accessed 2026-07-01
- OpenAI Agents SDK on GitHub (MIT) · accessed 2026-07-01
- OpenAI launch announcement · accessed 2026-07-01
The Agent Examiner editorial · last updated 2026-07-01. Facts are drawn from each vendor’s own public materials; scores are our editorial opinion (methodology).
Product and company names are trademarks of their respective owners and are used here only to identify the products under discussion.