LangChain Expression Language (LCEL) - Understanding Implementation and Pipeline Building

Learn LangChain's Expression Language (LCEL) in this 18-minute tutorial that explores how LCEL works under the hood and its implementation with OpenAI's LLMs. Compare LCEL against traditional LangChain methods while building a practical pipeline where users input specific topics and the LLM generates comprehensive research reports. Master the LCEL pipe operator for chaining operations, implement RunnableLambda for custom functions, and utilize Runnable Parallel and Passthrough for advanced pipeline configurations. Gain hands-on experience creating efficient LangChain workflows that demonstrate the power and flexibility of LCEL for building AI-powered applications.