Reflections on Three Years of Building LangChain

BlogHarrison Chase (LangChain)Jun 14, 2025

AI Summary

Harrison Chase's October 2025 retrospective โ€” three years from chatbot prototypes to production agents. Honest about what LangChain got wrong (over-abstraction in the early days, framework-vs-pattern friction with the Anthropic 'Building Effective Agents' camp), and what the orchestration layer needs to look like now. Pairs with 'Deep Agents' and 'Not Another Workflow Builder' as the trilogy that explains LangChain's 2026 positioning. Useful as a counterweight to the Anthropic-only reading list.

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