What is the Claude Agent SDK?
In February 2026, Anthropic launched the Claude Agent SDK alongside Claude Opus 4.6—a framework designed to help developers build multi-agent teams and easily create complex automation pipelines. Going far beyond a simple chatbot API, this innovative tool enables multiple Claude instances to collaborate, divide responsibilities, and process large-scale tasks in parallel.
Core Concepts of Agent Teams
An orchestrator agent creates the overall plan and delegates tasks to multiple sub-agents, achieving results that are significantly faster and more accurate. Each agent operates with its own independent context window and specializes in a defined role. Integration with external systems has been greatly enhanced through the Model Context Protocol (MCP).
Practical Use Cases
Using multi-agent setups for code reviews, research automation, and microservice code generation can speed up processing by 3–5x compared to single agents. A hybrid strategy—using Claude Opus 4.6 for the orchestrator and Claude Sonnet 4.6 for sub-agents—can reduce costs by 40–60%.
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