Build LLM Apps Using Langchain | Langchain Tutorial For Beginners | LLM Explained | Simplilearn

?Purdue - Applied Generative AI Specialization - https://www.simplilearn.com/applied-ai-course?utm_campaign=Vx1uhkR-pLs&utm_medium=DescriptionFirstFold&utm_source=Youtube ?Professional Certificate Program in Generative AI and Machine Learning - IITG (India Only) - https://www.simplilearn.com/iitg-generative-ai-machine-learning-program?utm_campaign=Vx1uhkR-pLs&utm_medium=DescriptionFirstFold&utm_source=Youtube ?Advanced Executive Program In Applied Generative AI - https://www.simplilearn.com/applied-generative-ai-course?utm_campaign=Vx1uhkR-pLs&utm_medium=DescriptionFirstFold&utm_source=Youtube In this video by Simplilearn, we explore Langchain and its role in Large Language Model (LLM) app development. We cover the fundamentals of Langchain, its key components like Models, Prompts, and Output Parsers with practical examples, and demonstrate how these elements work in real-world applications. We’ll also show how to feed memory to models for smarter outcomes, explain the importance of Chains in Langchain, and walk through building powerful Smart QA systems. Additionally, we’ll dive into Langchain Agents, explaining how they work and fit into the ecosystem. Packed with live demos, this video will provide you with hands-on insights to enhance your LLM app development skills. 00:00:07 - Introduction 00:00:16 - What is LLM App Development? 00:02:28 - What is LangChain? 00:03:10 - Core Components in LangChain 00:04:23 - How LangChain helps in LLM App Development? 00:08:21 - Why is LangChain Preferred? 00:11:28 - What are Models? 00:12:55 - What are Prompts? 00:13:48 - What are Output Parsers? 00:15:03 - Core Components in Action 00:36:44 - Feeding Memory into the Model Demo 00:48:25 - What is a Chain? 00:49:02 - Why Chains Matter? 00:49:59 - How Chains Work? 00:51:02 - Chains in LangChain in Action 01:05:38 - What is QA? 01:06:06 - Why is QA so Powerful? 01:06:59 - How does QA Work? 01:07:35 - Building Smart QA Systems Demo 01:15:37 - Evaluating the System Demo 01:21:25 - Building Agents using LangChain Demo LangChain is a powerful framework that simplifies the development of applications using Large Language Models (LLMs). It helps by providing tools to connect LLMs with external data sources, APIs, and workflows. LangChain allows developers to chain multiple actions, like data retrieval, processing, and generating responses, into a cohesive application. ⏩ Check out More AI and ML Videos By Simplilearn: https://www.youtube.com/playlist?list=PLEiEAq2VkUULyr_ftxpHB6DumOq1Zz2hq #generativeAI #AI #LLMApp #Langchain #GenAI #ArtificialIntelligence #simplilearn #2025 ➡️ About Professional Certificate Program in Generative AI and Machine Learning Dive into the future of AI with our Generative AI & Machine Learning course, in collaboration with E&ICT Academy, IIT Guwahati. Learn tools like ChatGPT, OpenAI, Hugging Face, Python, and more. Join masterclasses led by IITG faculty, engage in hands-on projects, and earn Executive Alumni Status. Key Features: ✅ Program completion certificate from E&ICT Academy, IIT Guwahati ✅ Curriculum delivered in live virtual classes by seasoned industry experts ✅ Exposure to the latest AI advancements, such as generative AI, LLMs, and prompt engineering ✅ Interactive live-virtual masterclasses delivered by esteemed IIT Guwahati faculty ✅ Opportunity to earn an 'Executive Alumni Status' from E&ICT Academy, IIT Guwahati ✅ Eligibility for a campus immersion program organized at IIT Guwahati ✅ Exclusive hackathons and “ask-me-anything” sessions by IBM ✅ Certificates for IBM courses and industry masterclasses by IBM experts ✅ Practical learning through 25+ hands-on projects and 3 industry-oriented capstone projects ✅ Access to a wide array of AI tools such as ChatGPT, Hugging Face, DALL-E 2, Midjourney and more ✅ Simplilearn's JobAssist helps you get noticed by top hiring companies Skills Covered: ✅ Generative AI ✅ Prompt Engineering ✅ Chatbot Development ✅ Supervised and Unsupervised Learning ✅ Model Training and Optimization ✅ Model Evaluation and Validation ✅ Ensemble Methods ✅ Deep Learning ✅ Natural Language Processing ✅ Computer Vision ✅ Reinforcement Learning ✅ Machine Learning Algorithms ✅ Speech Recognition ✅ Statistics Learning Path: ✅ IITG AI: Program Induction ✅ IITG AI: Programming Fundamentals ✅ IITG AI: Python for Data Science (IBM) ✅ IITG AI: Applied Data Science with Python ✅ IITG AI: Machine Learning ✅ IITG AI: Deep Learning with TensorFlow (IBM) ✅ IITG AI: Deep Learning Specialization ✅ IITG AI: Essentials of Generative AI, Prompt Engineering & ChatGPT ✅ IITG AI: Advanced Generative AI ✅ IITG AI: Capstone Electives: ✅ IITG AI: ADL & Computer Vision ✅ IITG AI: NLP and Speech Recognition ✅ IITG AI: Reinforcement Learning ✅ IITG AI: Academic Masterclass ✅ IITG AI: Industry Masterclass ? Learn More At: https://www.simplilearn.com/iitg-generative-ai-machine-learning-program?utm_campaign=Vx1uhkR-pLs&utm_medium=Description&utm_source=Youtube