Type: url
Original: https://www.langchain.com/blog/how-and-when-to-build-multi-agent-systems
Status: partial
Summary
A LangChain blog post by Harrison Chase (16 June 2025) reading Cognition’s “Don’t Build Multi-Agents” and Anthropic’s “How we built our multi-agent research system” side by side and arguing that, despite their opposing titles, they share two lessons: context engineering is crucial, and multi-agent systems that mainly “read” are easier to build than ones that “write”. It then draws out production concerns both posts raise — durable execution, agent debugging and observability, and evaluation — and ties each to LangGraph and LangSmith, concluding that there is no one-size-fits-all architecture.