7 Best Udemy Courses to Learn LlamaIndex for building LLM Powered Apps in 2025

My favorite Udemy course to learn LlamaIndex and Olama for building LLM Powered apps in 2025

7 Best Udemy Courses to Learn LlamaIndex for building LLM Powered Apps
credit — LlamaIndex

Hello friends, if you’re serious about building powerful Large Language Model (LLM) applications, then you must have come across LlamaIndex, a powerful library to build LLM applications that connect Large Langage Models like GPT-4 to your data.

While frameworks like LangChain and Streamlit often grab the limelight, LlamaIndex has quietly become a favorite for developers who want to connect LLMs with structured and unstructured data efficiently.

If you want to learn LlamaIndex in 2025 and looking for best online resources then you have come to the right place.

Earlier, I have shared best AI and Machine Learning courses, and Gen AI and LLM courses and today I am going to share best online courses from Udemy to learn LlamaIndex in 2025.

While books like AI Engineering by Chip Huyen and The LLM Engineering Handbook by Paul Iusztin and Maxime Labonne are a good starting point, but if you really want to gain confidence, nothing beats learning by doing — and that’s where these Udemy courses shine.

These hand-picked courses don’t just teach you LlamaIndex; they guide you through building real applications, integrating with vector databases, designing RAG systems, and optimizing LLMs for production use.

Whether you’re a beginner trying to get your head around Gen AI tools or a professional looking to level up your skills, there’s something here for you.

By the way, if you are new to AI world then I highly recommend you to start with The AI Engineer Course 2025: Complete AI Engineer Bootcamp, one of the most comprehensive resource to become an AI Engineer in 2025.

Why Learn LlamaIndex?

LlamaIndex provides a powerful way to bridge the gap between LLMs and your data. While large models like GPT-4 or LLaMA are incredibly capable, they don’t know your company’s internal documents, private datasets, or custom knowledge bases.

LlamaIndex helps you create pipelines to ingest, index, query, and retrieve data, allowing LLMs to reason over your specific information.

This framework simplifies Retrieval-Augmented Generation (RAG) architectures, making it easier to enhance accuracy, reduce hallucinations, and add context-awareness to your AI applications.

With LlamaIndex, you can rapidly build tools like custom chatbots, search engines, or AI agents that work on your own data — and do it at scale.

Now let’s look at some of the best Udemy courses to master LlamaIndex this year.

7 Best Udemy Courses to Learn LlamaIndex for building LLM Powered Apps

7 Best Udemy Courses to Learn LlamaIndex for building LLM Powered Apps in 2025

Without any further ado, here are the best online courses you can join on Udemy to learn about LlamaIndex and building LLM Powered Apps in 2025. These courses are both hands-on and packed with lot of info.

1. LlamaIndex Develop LLM powered apps (Legacy, V0.8.48)

This bestselling Udemy course helps you quickly build a generative AI application using LlamaIndex (V0.8.48) with Python. The focus is on speed — you’ll develop real-world projects fast and gain a strong working knowledge of the core framework.

Here are key things you will learn in this course:

  • Build LLM-powered apps using LlamaIndex
  • Index and query structured and unstructured data
  • Design a basic RAG architecture

This course is best for those who want hands-on experience building AI apps without getting bogged down in too much theory.

Talking about social proof, more than10,886 students have already joined this course and it has got on average 4.6 rating which is simply amazing and shows a lot about the quality of the course.

Here is the link to join this course — LlamaIndex Develop LLM powered apps (Legacy, V0.8.48)

2. Build RAG Applications with LlamaIndex and JavaScript [NEW]

If you’re working in JavaScript or want to integrate LLMs with web technologies, this highly-rated course is ideal. It covers advanced data engines, custom selection techniques, and how to deploy RAG applications efficiently.

Here are key things you’ll learn:

  • Build and deploy LLM-backed RAG systems
  • Use JavaScript to connect with LlamaIndex and vector databases
  • Optimise retrieval for faster, smarter AI apps

This Udemy course is best for developers looking to work beyond Python and build modern web apps powered by LLMs. It’s a relatively new course but with highest rating and 412 students already joined.

Here is the link to join this course — Build RAG Applications with LlamaIndex and JavaScript [NEW]

3. Mastering LlamaIndex: Build Smart AI-Powered Data Solutions

This LlamaIndex course is about precision. You’ll master query engines and develop RAG systems that are both fast and accurate. It focuses on real-world AI solutions where performance matters.

What you’ll learn:

  • Advanced query engine design with LlamaIndex
  • Build data pipelines optimised for LLMs
  • Integrate with vector databases and APIs

This Udemy LlamaIndex course is ideal for Software Engineers ngineers who want to take their LlamaIndex skills to a professional level. More than 2,666 students have already joined this course.

Here is the link to join this LlamaIndex course — Mastering LlamaIndex: Build Smart AI-Powered Data Solutions

4. Getting started with Gen AI using LlamaIndex for Beginners

If you’re new to Gen AI or LlamaIndex, this beginner-friendly Udemy course provides a solid foundation. You’ll build LLM apps from scratch using Python and get familiar with core concepts.

Here are key things you will learn in this course:

  • The basics of LlamaIndex and how to set up your environment
  • Build simple LLM-powered apps
  • Understand indexing, querying, and retrieval

This online course is best for beginners who want a gentle introduction before diving deeper. More than 449 students have already joined this course.

Here is the link to join this Udemy course — Getting started with Gen AI using LlamaIndex for Beginners

5. Ollama: Beginner to Pro using No-Code & Python Codes

This Udemy course covers much more than LlamaIndex, but it includes practical sections on integrating LlamaIndex with Meta LLaMA 3, OpenAI, and LangChain. It also shows how to work with no-code tools and Python for rapid development.

What you’ll learn:

  • Use Ollama CLI with LlamaIndex
  • Integrate no-code workflows with custom Python scripts
  • Combine multiple LLM frameworks for richer applications

This Udemy LlamaIndex course is best for builders who like mixing no-code tools with custom coding. It’s also a new course with 550 students already joined.

Here is the link to join this LlamaIndex course — Ollama: Beginner to Pro using No-Code & Python Codes

6. Gen AI — LLM RAG Two in One — LangChain + LlamaIndex

This LlamaIndex course on Udemy focuses on building RAG applications using both LangChain and LlamaIndex, helping you understand where each shines and how to combine them for powerful results.

What you’ll learn:

  • Develop RAG systems that combine LangChain and LlamaIndex
  • Work with LLMs and vector databases
  • Build apps that retrieve and generate data intelligently

This online course is best for AI developers who want flexibility in choosing the right tools for the job.

Here is the link to join this course — Gen AI — LLM RAG Two in One — LangChain + LlamaIndex

7. LlamaIndex: Train ChatGPT (& other LLMs) on Custom Data

This popular LlamaIndex course on Udemy shows you how to customize ChatGPT and other LLMs using your own data with LlamaIndex. It covers everything from ingestion to querying and retrieval.

What you’ll learn:

  • Connect ChatGPT with your data
  • Use LlamaIndex for fine-tuning without modifying the base model
  • Build applications that deliver accurate, data-grounded answers

This Udemy course is ideal for anyone looking to enhance ChatGPT with custom data sources. More than 4,708 students have already joined this course.

Here is the link to join this LlamaIndex course — LlamaIndex: Train ChatGPT (& other LLMs) on Custom Data

That’s all about the top 7 Udemy courses to learn LlamaIndex and Olama for building LLM Powered Apps in 2025. You can join one more of these courses to learn and master LlamaIndex to build your LLM Powered application in 2025.

LlamaIndex is becoming a must-have tool in the AI developer’s toolkit. As companies demand smarter, more context-aware LLM applications, knowing how to work with LlamaIndex gives you a competitive edge.

These Udemy courses offer practical, project-based learning that helps you not just understand the theory but actually build working solutions.

By the way, if you want to join multiple course on Udemy, its may be worth getting a Udemy Personal Plan, which will give instant access of more than 11,000 top quality Udemy courses for just $30 a month.

If you got a lot of time and want to save money, Udemy Personal Plan will be perfect for you.

Other AI, LLM, and Machine Learning resources you may like

Thanks a lot for reading this article so far, if you like these best LlamaIndex courses on Udemy then please share with your friends and colleagues. If you have any feedback or questions then please drop a note.

P. S. — If you want to learn from books and looking for best AI and LLM Books then I highly recommend you to read AI Engineering by Chip Huyen and The LLM Engineering Handbook by Paul Iusztin and Maxime Labonne, both of them are great books and my personal favorites. They are also highly recommend on Redditt and HN.

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