LangChain in Action: Develop LLM-Powered Applications from Udemy

This course provides an in-depth exploration into LangChain, a framework pivotal for developing generative AI applications. Aimed at both beginners and experienced practitioners in the AI world, the course starts with the fundamentals, such as the basic usage of the OpenAI API, progressively delving into the more intricate aspects of LangChain.

You'll learn about the intricacies of input and output mechanisms in LangChain and how to craft effective prompt templates for OpenAI models. The course takes you through the critical components of LangChain, such as Chains, Callbacks, and Memory, teaching you to create interactive and context-aware AI systems.

Midway, the focus shifts to advanced concepts like Retrieval Augmented Generation (RAG) and the creation of Autonomous Agents, enriching your understanding of intelligent system design. Topics like Hybrid Search, Indexing API, and LangSmith will be covered, highlighting their roles in enhancing the efficiency and functionality of AI applications.

Toward the end, the course integrates theory with practical skills, introducing Microservice Architecture in large language model (LLM) applications and the LangChain Expression Language. This ensures not only a theoretical understanding of the concepts but also their practical applications.

This course is tailored for individuals with a foundational knowledge of Python, aiming to build or enhance their expertise in AI. The structured curriculum ensures a comprehensive grasp of LangChain, from basic concepts to complex applications, preparing you for the future of generative AI.

What's inside

Learning objectives

Master langchain from basics to advanced features
Understand and implement retrieval augmented generation (rag) using vectorstores
Learn about the creation and use of powerful autonomous agents.
Grasp the functionalities and applications of the indexing api.

Explore the langsmith platform for production ready application
Learn about microservice architecture in the context of large language model (llm) applications.
Learn about the new langchain expression language with the runnable interface

Master langchain from basics to advanced features
Understand and implement retrieval augmented generation (rag) using vectorstores
Learn about the creation and use of powerful autonomous agents.
Grasp the functionalities and applications of the indexing api.
Explore the langsmith platform for production ready application
Learn about microservice architecture in the context of large language model (llm) applications.
Learn about the new langchain expression language with the runnable interface

Syllabus

LLM basics, OpenAI and what to expect from that course

What to expect from this course and how to get all ressources

Why this course is different

Prerequisites

Essential topics and terms (theory)

Why this course does not cover Open Source models like LLama2

Optional: Install Visual Studio Code

Get the source files with Git from Github

Create OpenAI Account and create API Key

Learn how to setup your IDE, OpenAI Account and everything you need before being able to use LangChain

Before delving into LangChain, it's crucial to set up our workspace for seamless code execution. Additionally, we'll explore the basic OpenAI package, evaluating its strengths and limitations. This will underscore the prowess of LangChain and highlight its significance.

Setup of a virtual environment

Setup OpenAI Api-Key as environment variable

Exploring the vanilla OpenAI package

In this part of the course you learn basic concepts of LangChain - LLMs, PromptTemplate and Chains - The backbone of more complex applications

IMPORTANT NOTE - LANGCHAIN 0.1 Codechanges

LLM Basics

Prompting Basics

Theory: Prompt Engineering Basics

Few Shot Prompting

Chain of thought prompting

Pipeline-Prompts

Prompt Serialisation

Learn how to combine an LLM With a prompt to chains. Chains can be very simple, but Langchain also allows us to compose quite complex chains like RouterChains or SequentialChains

Introduction to chains

Basic chains - the LLMChain

Response Schemas and OutputParsers

LLMChain with multiple inputs

SequentialChains

RouterChains

Learn how to hook into the lifecycle of chains to log tokens, monitor your chain and some other tasks.

Callbacks

Learn how to give your LLM Applications memory

Memory basics - ConversationBufferMemory

ConversationSummaryMemory

EXERCISE: Use Memory to build a streamlit Chatbot

SOLUTION: Chatbot with Streamlit

Learn what OpenAI Function Calling is, learn how to use the OpenAI package for this and do the same with langchain. Also learn the limits of the current langchain implementation

OpenAI Function Calling - Vanilla OpenAI Package

Function Calling with LangChain

Limits and issues of the langchain Implementation

Learn how to take raw data, split it, embed it and put it into a vector store. Also learn how to retrieve it with langchain retrievers

RAG - Theory and building blocks

Loaders and Splitters

Embeddings - Theory and practice

VectorStores and Retrievers

RAG Service with FastAPI

Learn what agents are, how they interact with the "outside" world and already learn about their strenghts and weaknesses

Agents Basics - LLMs learn to use tools

Agents with a custom RAG-Tool

ChatAgents

Learn how to gain more control over creating, updating and deleting vectors from your VectorStore

Indexing API - keep your documents in sync

PREREQUISITE: Docker Installation

Setup of PgVector and RecordManager

Indexing Documents in practice

Document Retrieval with PgVector

Learn everything about LangSmith - the new LLM Development platform from the langchain team

Introduction to LangSmith (User Interface and Hub)

LangSmith Projects

LangSmith Datasets and Evaluation

Learn to go from prototypes with streamlit to a Microservice Architecture with React, Redis, FastAPI and more - all deployed on a kubernetes cluster

Before you watch this section

Introduction to Microservice Architecture

How our Chatbot works in a Microservice Architecture

Introduction to Docker

Introduction to Kubernetes

Deployment of the LLM Microservices to Kubernetes

Learn about the new LangChain Expression Language and how it allows you to compose chains with Runnables

LangChain Expression Language

Intro to LangChain Expression Language

LCEL Part 1 - Pipes and OpenAI Function Calling

LCEL - Part 2 - VectorStores, ItemGetter, Tools

LCEL - Part 3 - Arbitrary Functions, Runnable Interface, Fallbacks

Congratulations!

Thank you for participating in this course

Good to know

Know what's good

, what to watch for

, and possible dealbreakers

Teaches LangChain, a powerful framework for generative AI applications

Provides a comprehensive foundation in LangChain, from its basics to advanced features

Covers advanced concepts like RAG and the creation of Autonomous Agents

Offers a practical approach with hands-on exercises and real-world examples

Introduces the latest technologies like Microservice Architecture and the LangChain Expression Language

Suitable for learners with a foundational knowledge of Python

Activities

Be better prepared before your course. Deepen your understanding during and after it. Supplement your coursework and achieve mastery of the topics covered in LangChain in Action: Develop LLM-Powered Applications with these activities:

Refresh Probability and Statistics In Advance

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This course requires a basic understanding of probability and statistics. Completing this activity will allow you to review those basics and ensure your success.

Browse courses on Probability

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Review your lecture notes from your previous probability and statistics course
Complete the online refresher course on probability and statistics
Work through the practice problems provided in the refresher course
Take a practice quiz to test your understanding of the material

Follow a Course on Prompt Engineering

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There are many online courses and tutorials that can help you learn more about prompt engineering. Completing a course will give you a structured and comprehensive understanding of the topic.

Browse courses on Prompt Engineering

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Find a course or tutorial that fits your learning style
Complete the course or tutorial
Apply what you've learned to your own LLM projects

Practice Prompt Engineering

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Prompt engineering is a core skill for using LLMs effectively. This activity will help you practice and improve your prompt engineering skills.

Browse courses on Prompt Engineering

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Read a few articles or blog posts about prompt engineering
Experiment with different prompting techniques using an LLM
Get feedback on your prompts from a mentor or peer

Five other activities

Expand to see all activities and additional details

Show all eight activities

Attend a LangChain Workshop

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Attending a workshop is a great way to learn more about LangChain and connect with other people who are using it.

Browse courses on LangChain

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Find a LangChain workshop that fits your interests
Register for the workshop
Attend the workshop

Mentor a beginner in LangChain

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Reinforce your understanding of LangChain by sharing your knowledge and helping others learn the framework.

Browse courses on Knowledge Transfer

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Find a beginner who is interested in learning LangChain.
Provide guidance and support on LangChain concepts and practices.
Answer questions and troubleshoot issues.

Create a LangChain Tutorial

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Creating a tutorial will help you solidify your understanding of LangChain and its features.

Browse courses on LangChain

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Choose a topic for your tutorial
Write a script or outline for your tutorial
Create a video or written tutorial
Share your tutorial with others

Build a Chatbot Using LangChain

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Building a chatbot is a great way to apply your LangChain skills and create something practical and useful.

Browse courses on LangChain

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Design your chatbot
Develop your chatbot using LangChain
Test and deploy your chatbot

Follow tutorials on RAG and Autonomous Agents

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Deepen your understanding of RAG and Autonomous Agents by working through guided tutorials that demonstrate their practical applications.

Browse courses on Retrieval Augmented Generation (RAG)

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Find tutorials on RAG and Autonomous Agents from the course materials or online resources.
Follow the tutorials step-by-step, experimenting with the code examples.
Apply your learnings to create your own RAG or Autonomous Agent applications.

Career center

Learners who complete LangChain in Action: Develop LLM-Powered Applications will develop knowledge and skills that may be useful to these careers:

AI Engineer

AI Engineers use engineering principles and techniques to design, build, and maintain AI systems. LangChain gives AI Engineers a simplified environment to quickly develop AI prototypes that can later be scaled into production-ready AI applications. This course dives into the fundamentals and advanced features of LangChain and teaches you how to build intelligent AI applications that leverage the latest advancements in AI technology.

See salaries and explore the career path for AI Engineer

Machine Learning Engineer

Machine Learning Engineers have a unique opportunity to design, monitor and improve the performance of models that are used to extract valuable insights from data. This course introduces the fundamentals of Machine Learning Engineering and provides learners with hands-on experience in building and implementing a production ready model with LangChain. The course also caters to professionals who are in a related domain and wish to either transition or advance their current role with a strong foundation in LangChain and its applications.

See salaries and explore the career path for Machine Learning Engineer

Software Engineer

Software Engineers apply their knowledge and skills to design, develop, and test software applications. LangChain is a highly effective tool for software engineers who want to learn how to integrate Machine Learning models into their software applications. This course teaches software engineers how to use LangChain to build more efficient and intelligent applications that are capable of sophisticated tasks that were previously impossible.

See salaries and explore the career path for Software Engineer

AI Architect

AI Architects design, develop, and manage AI solutions at scale. With LangChain, they can rapidly build, deploy, and maintain AI applications using a unified platform. This course covers the fundamentals and advanced techniques of LangChain, enabling AI Architects to leverage its capabilities to create scalable, efficient, and reliable AI solutions that meet the demands of complex business environments.

See salaries and explore the career path for AI Architect

DevOps Engineer

DevOps Engineers are responsible for bridging the gap between software development and operations. LangChain integrates seamlessly into existing DevOps pipelines, enabling DevOps Engineers to automate and streamline the deployment and management of Machine Learning models. This course provides a comprehensive overview of LangChain, with a focus on its integration with DevOps practices and tools, allowing DevOps Engineers to enhance their skillset and drive innovation within their organizations.

See salaries and explore the career path for DevOps Engineer

Full Stack Engineer

Full Stack Engineers design, develop, implement and maintain software applications. LangChain enables them to seamlessly integrate AI capabilities into their applications utilizing different programming languages and frameworks. This course provides a comprehensive overview of LangChain, from basic concepts to advanced features, while also covering practical implementation and deployment of LangChain in Full Stack applications.

See salaries and explore the career path for Full Stack Engineer

Natural Language Processing Scientist

Natural Language Processing Scientists strive to make computers understand and process human languages. LangChain is a fantastic tool that enables and empowers NLP practitioners to quickly prototype and release NLP models, in their most recent versions and with the latest capabilities, to the end users and customers. This course covers essential NLP components of LangChain that allow developers and engineers to leverage state-of-the-art NLP models like GPT-3, Codex and BLOOM into their applications.

See salaries and explore the career path for Natural Language Processing Scientist

Product Manager

Product Managers are responsible for the development and management of products throughout their lifecycle. Incorporating AI into products can bring significant advantages, and LangChain can simplify and accelerate this process for Product Managers. This course provides a comprehensive overview of LangChain, enabling Product Managers to understand its potential, make informed decisions about its use, and drive the development of innovative AI-powered products.

See salaries and explore the career path for Product Manager

AI Consultant

AI Consultants provide guidance and expertise on AI-related initiatives. With a solid understanding of LangChain, AI Consultants can effectively assess client needs, recommend solutions, and guide organizations in implementing and managing AI projects. This course provides a comprehensive overview of LangChain and its applications, enabling AI Consultants to expand their service offerings and deliver value to clients.

See salaries and explore the career path for AI Consultant

Data Scientist

Data science is a field that helps organizations make better and more timely decisions by leveraging their data to uncover meaningful trends, influences, and correlations. With this course, you can learn how LangChain automates many of the tasks that data scientists do on a regular basis and allows practitioners to focus on understanding the data and extracting the business value from it. Through a series of demonstrations and hands-on labs, you will learn how to use LangChain to quickly build ML models, prepare and transform data, select features for predictive modeling, evaluate the models, and implement them in web applications.

See salaries and explore the career path for Data Scientist

AI Product Manager

AI Product Managers focus on the development and management of AI products and solutions. This course provides a solid foundation in LangChain and its applications, enabling AI Product Managers to make informed decisions about the integration of LangChain into their products. By understanding the capabilities and limitations of LangChain, Product Managers can ensure that their products are well-aligned with business needs and deliver optimal value to users.

See salaries and explore the career path for AI Product Manager

AI Trainer

AI Trainers are responsible for developing and delivering training programs on AI technologies and applications. This course equips AI Trainers with the knowledge and skills to effectively leverage LangChain within their training programs. By understanding the capabilities and best practices of LangChain, AI Trainers can empower learners to build, deploy, and maintain AI applications with greater efficiency and effectiveness.

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Data Analyst

Data Analysts collect, analyze, interpret, and present data to inform decision-making. Using LangChain, Data Analysts can automate most of their mundane tasks and focus more on understanding the bigger picture within the data, and how it can be used to inform better decision-making. This course provides hands-on experience with LangChain, helping Data Analysts leverage its capabilities to uncover valuable insights and make meaningful contributions to their organization.

See salaries and explore the career path for Data Analyst

Business Analyst

Business Analysts help organizations improve their processes and performance. LangChain can be a powerful tool for Business Analysts who want to leverage data and AI to identify inefficiencies, optimize operations, and drive better decision-making. This course provides a foundation in LangChain and its applications, enabling Business Analysts to understand how AI can enhance their work and contribute to the success of their organizations.

See salaries and explore the career path for Business Analyst

AI Researcher

AI Researchers are at the forefront of developing new AI technologies and techniques. This course may be helpful for AI Researchers who want to explore the use of LangChain as a tool for prototyping and testing new ideas. LangChain's capabilities in combining multiple AI models and automating tasks can accelerate the research process and allow AI Researchers to focus on developing innovative solutions.

See salaries and explore the career path for AI Researcher