LangChain – Develop LLM-powered applications with LangChain

This course provides an in-depth understanding of how to develop applications powered by Large Language Models (LLMs) using the LangChain framework. LangChain simplifies building AI-driven applications, particularly those leveraging LLMs such as GPT. By the end of the course, students can build end-to-end LLM-powered applications, integrate them into different systems, and optimize performance for real-world use cases.

Overview of LLMs:
Introduction to LLMs (GPT, BERT, etc.)
How LLMs work: Understanding the transformer architecture
Popular use cases of LLMs in industry

What is LangChain, and why use it?
LangChain vs other frameworks for building LLM applications
Setting up your development environment (Python, LangChain, OpenAI API)

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Module 2: Building Basic Applications with LangChain 

LangChain Basics:
Creating your first LangChain-based application
Integrating with OpenAI’s GPT API
Working with prompts and handling LLM responses

 Building a basic chatbot with LangChain
Generating text summaries and content generation

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Module 3: Chains and Pipelines in LangChain 

Understanding Chains:
What are Chains in LangChain?
Different types of chains: Simple chains, sequential chains, and parallel chains
Practical use of Chains to connect multiple LLM calls

Pipelines for Complex Workflows:

Designing and building multi-step pipelines
Use case: Combining search, generation, and reasoning steps
Handling errors and fallbacks in pipelines

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 Module 4: Prompt Engineering and Optimization

What is prompt engineering?
Techniques for crafting effective prompts for LLMs
Dynamic prompts and templates in LangChain

Token efficiency and minimizing API usage
Controlling LLM responses with temperature, max tokens, and top-p

Hands-on Lab:
Building a question-answering system with optimized prompts

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Module 5: Memory Management and Persistence 

Introduction to memory types: short-term and long-term memory in LLMs
Managing state and context in applications

Storing memory for continued user sessions
Integrating LangChain with databases (e.g., Redis, MongoDB) for persistent memory

Case Study:
Building an AI assistant that remembers previous interactions

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Module 6: Integrating External Tools and APIs 

Introduction to external tool integration
Connecting LLMs to external APIs (e.g., web scraping, calendar APIs)

Building applications that automate workflows using LLMs
Using LangChain with third-party services (e.g., Slack, email)

Hands-on Lab:
Developing an intelligent task automation application using LangChain and external APIs

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Module 7: Advanced Topics in LangChain 

Implementing advanced reasoning techniques
Use cases for chain-of-thought reasoning in real-world applications

Introduction to fine-tuning LLMs with LangChain
Leveraging pre-trained models for specific tasks (e.g., domain-specific applications)

Handling Edge Cases:
Managing edge cases, failure modes, and improving application reliability

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Module 8: Deploying and Scaling LLM-Powered Applications 

Best practices for deploying LLM-based applications on cloud platforms
CI/CD pipelines for deploying LangChain applications

Handling large-scale requests and ensuring high availability
Optimizing performance with caching and load balancing

Hands-on Project:
Deploying an LLM-powered web application on AWS/Azure/Heroku

Upon completing this course, learners will be equipped to pursue careers in the following areas:

AI Application Developer:
Design and develop AI-driven applications using frameworks like LangChain.

Conversational AI Engineer:
Build advanced chatbots and virtual assistants with LLMs

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Automation Engineer:
Develop automation workflows using LLM-powered tools.

AI Solutions Architect:
Design large-scale AI solutions that integrate LLMs into business processes.

Course Prerequisites:

Familiarity with programming concepts (prior experience with Python is recommended)
Interest in learning AI-related technologies

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