Claude Agent SDK vs OpenAI Agents SDK
Side-by-side comparison of Claude Agent SDK and OpenAI Agents SDK. Pricing, features, best use cases, and honest verdict from a developer who has tested both.
Claude Agent SDK
NewAnthropic's Python SDK for building production agent systems. Tool use, guardrails, agent handoffs, and orchestration. Released alongside Claude 4.
OpenAI Agents SDK
Lightweight Python framework for multi-agent systems. Agent handoffs, tool use, guardrails, tracing. Successor to the experimental Swarm project.
Feature Comparison
| Feature | Claude Agent SDK | OpenAI Agents SDK |
|---|---|---|
| Category | AI Frameworks | AI Frameworks |
| Type | SDK / Framework | SDK / Framework |
| Pricing | See website for pricing | See website for pricing |
| Best For | Production Python agent systems with Claude | Lightweight multi-agent orchestration |
| Language / Platform | Python | Python |
| Open Source | No | No |
In Depth
Claude Agent SDK
The Claude Agent SDK provides building blocks for production agent systems in Python. It handles tool registration (define tools as Python functions, the SDK auto-generates schemas), guardrails (input/output validation), agent-to-agent handoffs (specialist agents that delegate), and multi-turn orchestration. It's designed to work with Claude's native tool use - no wrapper layers or prompt hacking. Released alongside Claude 4, it competes with OpenAI's Agents SDK and LangChain. I use it when building Python-based agents that need reliability and structured workflows.
OpenAI Agents SDK
The OpenAI Agents SDK (the production successor to Swarm) is a minimal Python framework for building multi-agent systems. Core concepts: Agents (an LLM + instructions + tools), Handoffs (agents delegating to specialists), Guardrails (input/output validation), and Tracing (built-in observability). It's deliberately lightweight - no heavy abstractions or state management. You define agents as simple Python objects, wire them together with handoffs, and the SDK handles the orchestration. It works with any OpenAI model and supports streaming. Good for building customer service bots, research agents, and workflow automation.
The Verdict
Both Claude Agent SDK and OpenAI Agents SDK are strong tools in the ai frameworks space. The right choice depends on your workflow. Read the full review of each tool for a deeper dive, or watch the video walkthroughs to see them in action.