{"type": "article", "title": "Mastering LangChain: Open-Source Models & Prompt Engineering (Part 2)", "publisher": "Web Pulse", "url": "https://wpnews.pro/news/mastering-langchain-open-source-models-prompt-engineering-part-2", "original_source": "https://pub.towardsai.net/mastering-langchain-open-source-models-prompt-engineering-part-2-cb4e6e519292?source=rss----98111c9905da---4", "published": "2026-09-08T21:31:02+00:00", "accessed": "2026-09-08", "id": "mastering-langchain-open-source-models-prompt-engineering-part-2"}