Deep Agents
AI Summary
Harrison Chase's July 2025 post that named the next generation of agent architecture. A simple LLM-in-a-loop is 'shallow' and breaks on long horizons; a 'deep agent' adds four things: a planning tool, sub-agents, file-system access, and a detailed system prompt. Cites Deep Research, Manus, and Claude Code as the three reference implementations. The post that gave LangChain a coherent positioning post-LangGraph and pulled the rest of the orchestration ecosystem along with it.
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Content attributed to the original author (Harrison Chase (LangChain)). Burn 451 curates publicly available writing as a reading index. For removal requests, contact @hawking520.