OpenAI Agents SDK
minimal, clean and production-ready — despite the name
the productionised successor to swarm: a tight event-loop with handoffs, guardrails and built-in tracing that ships fast and reads cleanly. thinner on durability than langgraph, but you can bolt temporal on.
the agents sdk gives you an agent (instructions plus tools), handoffs to delegate to another agent, guardrails, sessions, and a built-in tracing dashboard, in python and typescript. it is deliberately minimal and readable, which makes it one of the fastest ways to ship a working agent. despite the name it is cross-provider via litellm, though it's tightest with openai's own responses api. temporal shipped a ga integration in march 2026 for the durability it doesn't do natively.
it explicitly replaces swarm, openai's earlier experimental handoff library, which is now archived-in-spirit and labelled educational — do not start new work there. the agents sdk is the supported path.
the description above is ours, condensed from the ranking. pricing moves — check it on the vendor's own page before you rely on it.
- category
- ai agent frameworks
- pricing
- free — MIT (open source)
- website
- github.com
the productionised successor to swarm: a tight event-loop with handoffs, guardrails and built-in tracing that ships fast and reads cleanly. thinner on durability than langgraph, but you can bolt temporal on.
we researched this category against vendors' own pricing pages and licence files. that is where this line comes from — not from the vendor, and not from anything they paid for.
more ai agent frameworks
LangGraph
we checked thisfree — MIT (open source)the most production-proven stateful-agent runtime
Pydantic AI
we checked thisfree — MIT (open source)type-safe agents from the team that validates half of python ai