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Developing LLM Apps with LangChain

This byte-sized course will teach you how to build state-of-the-art LLM-powered applications with LangChain, Pinecone, and Python! This is the perfect way to start learning about the world of AI application development.

4 hours 0 projects 41 + lessons

Rated 4.9 out of 5 on Trustpilot

Rated 4.9 out of 5 on Trustpilot

2 Days

Average time students take to complete this course.

Last updated: April 2026
Our students are getting hired by top companies. We can help you too.

What you'll learn

  • How to integrate external data sources, including books and documents, into LLMs like GPT for enhanced question-answering capabilities beyond their initial training data
  • The fundamentals of building LLM-powered applications using the LangChain framework, enabling you to harness the full potential of AI in custom projects
  • Techniques for leveraging Pinecone and OpenAI with Python to create sophisticated Q&A applications, enhancing your technical skill set and understanding of modern AI tools
  • Step-by-step guidance on deploying scalable and performant AI applications, preparing you to create a portfolio-worthy project in just 3 hours

Why Learn LangChain?

LangChain is an open-source framework that allows developers working with AI to combine large language models (LLMs) like GPT-4 with external sources of computation and data.

It makes it easy to build and deploy AI applications that are both scalable and performant. LangChain is a great entry point into the AI field for individuals from diverse backgrounds and enables the deployment of AI as a service. It has a virtually infinite number of practical use cases!

Why Learn Pinecone?

Pinecone is a cutting-edge vector database designed specifically for machine learning and AI applications.

It enables developers and data scientists to efficiently store, manage, and search through large volumes of high-dimensional vector data, which is often generated by AI models like deep learning algorithms.

By learning Pinecone, you gain the capability to build advanced search, recommendation, and personalization systems that can handle complex queries and return highly relevant results in real-time.

This technology is crucial for anyone looking to build AI applications!

Wait... What's a Project?

One of the most common things we hear from students is: "I want to build more projects!".

We love hearing that, because building projects is really the best way to learn. And unique, challenging projects can really make your portfolio stand out for potential employers.

But also...it just feel so good when you actually build something real!

That's why we've created ZTM Projects. A collection of comprehensive portfolio and practice projects that you can use to advance your knowledge, learn new skills, build your portfolio, and sometimes even just have fun!

What Else Should I Know?

By becoming a ZTM member you'll not only get access to all our courses, bytes, and projects.

But you’ll also get to join our exclusive live online community classroom to learn alongside thousands of students, alumni, mentors, TAs and Instructors.

Most importantly, you'll be learning from an industry professional (Andrei) that has actual real-world experience with LangChain and Pinecone. He teaches you the exact information he uses in his role.

Finally, as with all ZTM courses, this course is a living thing. It will be constantly updated as the landscape changes so you can use it as your go-to resource for learning LangChain and Pinecone now and throughout your career.

Join 1,000s of Zero To Mastery graduates that have gotten hired and are now working at companies like Google, Tesla, Amazon, Apple, IBM, JP Morgan, Facebook, Shopify + other top tech companies.

They come from all different backgrounds, ages, and experiences. Many even started as complete beginners.

So there's no reason it can't be you too.

And you have nothing to lose. Because you can start learning right now and if this course isn't everything you expected, we'll refund you 100% within 30 days. No hassles and no questions asked.

Who You Will Learn With

You're getting more than just a course

Our instructors, TAs, Mentors, Alumni, and fellow students go above and beyond to help guide you and ensure you're on the right path to achieve your goals. Our private ZTM Discord server is a key factor in taking your skills, confidence and career to the next level.

Course curriculum

Here's an overview of what you learn in this LangChain course.

5 sections41 lessons4 hours total length

Introduction

5 lectures · 5min
5 lectures · 5min

Introduction·5:24

5:24
PREVIEW

Byte FAQ

PREVIEW

Course Resources

PREVIEW

Exercise: Meet Your Classmates and Instructor

PREVIEW

Set Your Learning Streak Goal

PREVIEW

Deep Dive into LangChain

14 lectures · 1hr 35min
14 lectures · 1hr 35min

LangChain and Vector Stores (Pinecone)

9 lectures · 1hr 4min
9 lectures · 1hr 4min

Project: RAG - Q&A Application on Your Private Documents (Pinecone & Chroma)

11 lectures · 1hr 20min
11 lectures · 1hr 20min

Where To Go From Here?

2 lectures
2 lectures

Who is Zero To Mastery for?

You'll fit right in if:

You're struggling to make progress using free tutorials that aren't giving you the structure or clear path to achieving your goals.
You don't want to learn alone. You want personalized feedback, support, and motivation from instructors and mentors and want to be part of a supportive community of like-minded individuals.
You want to learn by doing. You're excited to embrace the struggle of making mistakes that comes with building fun real-world projects you'll be proud of.
You're sick of outdated & boring tutorials. We pride ourselves on having the most up-to-date (and fun!) courses in the industry so that you're not wasting your time and only learning what matters right now.
You can't afford to spend $8,000+ on over priced bootcamps and colleges. We got you. We'll help you go from zero to hired for less than the cost of a cup of coffee a day.

We're not for you if:

You're just going to watch the lessons and take no action. Our courses are all about getting your hands dirty with exercises and putting what you're learning into action by building fun and impressive real-world projects.
You're not ready to invest in yourself or just looking for the cheapest way to learn. If that's you, no problem, use our free Learn to Code + AI & Get Hired guide.
You don't think fundamentals matter anymore because AI can do everything for you. Understanding the fundamentals and how things really work will always be important.
You think AI is going to replace you and think there's nothing you can do about it. Well... if you keep wasting time not learning AI tools & skills, you're probably right. Or you embrace them, and 2x your productivity (and probably income too!).

Meet your instructor

Your instructor (Andrei) isn't just an expert with years of real-world professional experience. He has been in your shoes. He makes learning fun. He makes complex topics feel simple. He will motivate you. He will push you. And he will go above and beyond to help you succeed.

Andrei Dumitrescu

Hi, I'm Andrei Dumitrescu!

Andrei is a Senior Network & Software Engineer with 15+ years of experience and over 50,000+ students have taken at least one of his top-rated courses.

SEE MY BIO & COURSES

Andrei Dumitrescu

DevOps Engineer

Frequently Asked Questions

Are there any prerequisites for this course?

  • Basic Python knowledge is required. If you don't have that be sure to take our Python Bootcamp course first!

Do you provide a certificate of completion?

We definitely do and they are quite nice. You will also be able to add Zero To Mastery Academy to the education section of your LinkedIn profile as well.

Are there subtitles?

Yes! We have high quality subtitles in 6 different languages: English, Spanish, French, German, Arabic, and Hindi.

You can even adjust the text size, color, background and more so that the subtitles are perfect just for you!

Still have more questions about the Academy?

Still have more questions specific to the Academy membership? No problem, we answer some more here.

What students are saying

Our courses and community have helped 1,000s of Zero To Mastery students go from zero to getting hired to levelling up their skills and advancing their careers to new heights.

Rated 4.9 out of 5 on Trustpilot

Learn the skills to stand out and get hired. In the age of AI.

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