Building Generative AI Apps with LangChain and Hugging Face — PickAClass
★ 3.2 (5) ⏱ 3h 6m 📚 28 lessons 🎧 Audio version

Building Generative AI Apps with LangChain and Hugging Face

Learn to design, build, and optimize intelligent applications and RAG pipelines using LangChain and Hugging Face, starting from the absolute basics.

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About this course

Generative AI is transforming how we build software, but connecting large language models to real-world data requires the right tools. This text-based course guides you through the core concepts of LangChain and Hugging Face to construct intelligent, context-aware applications. You will transition from understanding basic AI terminology to building and deploying functional generative AI applications. Through clear written explanations and structured code analysis, you will master the mechanics of prompt engineering, model integration, and external data retrieval. What you'll learn: - Understand the foundational principles of generative AI, large language models, and transformer architectures. - Integrate open-source models from Hugging Face into your development environment. - Build robust AI workflows, chains, and agents using the LangChain framework. - Develop Retrieval-Augmented Generation (RAG) pipelines to connect AI models with external vector databases. - Apply modern prompt engineering techniques to optimize model outputs and system reliability. - Configure and deploy generative AI applications for real-world production environments. The journey begins with essential AI concepts and environment setup before progressing to hands-on code walkthroughs for chat interfaces, content generators, and document search systems. You will read detailed conceptual breakdowns and study structured Python code snippets to build your practical skills. This course is designed for software developers, data enthusiasts, and tech professionals who are new to AI orchestration. A basic understanding of Python is recommended, but no prior machine learning experience is required. Start reading today to build your first intelligent AI application.

Course contents

6 modules · 28 lessons · 3h 6m

1 Foundations & Environment Setup
Understand the core theory and prepare the development environment.
5 lessons · 35 min
  1. What is Generative AI?
    Defining GenAI and its role in modern software development.
    6 min
  2. LLMs and Transformers Explained
    A high-level look at how Large Language Models and Transformer architectures process information.
    8 min
  3. Setting Up Your Python Environment
    Installing necessary libraries (langchain, transformers, torch) and managing API keys.
    7 min
  4. Exploring the Hugging Face Hub
    How to find and select open-source models for different tasks.
    6 min
  5. Loading Models with HuggingFacePipeline
    Connecting a Hugging Face model to your local Python code.
    8 min
2 Prompt Engineering & LangChain Basics
Master the art of prompting and the structure of LangChain.
5 lessons · 33 min
  1. Prompt Engineering Fundamentals
    Crafting effective instructions to guide model behavior.
    7 min
  2. Advanced Prompting Techniques
    Using Few-Shot and Chain-of-Thought prompting for complex tasks.
    7 min
  3. Introduction to LangChain
    Understanding the modular architecture of the LangChain framework.
    6 min
  4. Dynamic Prompts with PromptTemplates
    Creating reusable and parameterized prompt structures.
    6 min
  5. Creating Your First LLM Chain
    Linking a PromptTemplate and an LLM into a single workflow.
    7 min
3 Retrieval-Augmented Generation (RAG)
Connect models to external data using vector databases.
6 lessons · 40 min
  1. The RAG Architecture
    Why we need RAG to overcome LLM knowledge cutoffs and hallucinations.
    6 min
  2. Embeddings: Turning Text into Math
    How text embedding models represent meaning in vector space.
    7 min
  3. Working with Vector Databases
    Storing and searching embeddings using tools like Chroma or FAISS.
    7 min
  4. Document Loaders and Text Splitters
    Ingesting and chunking external data for efficient retrieval.
    6 min
  5. Building the Retrieval Chain
    Combining retrieval and generation into a context-aware pipeline.
    8 min
  6. Optimizing RAG Performance
    Improving accuracy through better chunking and retrieval strategies.
    6 min
4 Memory and Intelligent Agents
Add state and decision-making capabilities to your apps.
5 lessons · 34 min
  1. Adding Memory to Chains
    Enabling models to remember previous interactions in a session.
    6 min
  2. Building a Chat Interface
    Creating a conversational flow using LangChain's memory components.
    7 min
  3. Introduction to AI Agents
    How agents use reasoning to decide which tools to use.
    6 min
  4. Equipping Agents with Tools
    Connecting agents to external APIs and search engines.
    7 min
  5. Custom Agent Logic
    Building a specialized agent for a specific business task.
    8 min
5 Real-World Applications & Deployment
Build complete systems and prepare them for production.
5 lessons · 34 min
  1. Building a Content Generator
    Creating a tool that generates structured blog posts or reports.
    7 min
  2. Building a Document Search System
    Developing a 'Chat with your PDF' application.
    8 min
  3. Error Handling and Reliability
    Managing model timeouts, rate limits, and unexpected outputs.
    6 min
  4. Production Configuration
    Optimizing model parameters and environment variables for scale.
    6 min
  5. Deploying Your AI App
    Overview of deployment options (Streamlit, FastAPI, or Cloud).
    7 min
6 Course Wrap-up
Review and look ahead.
2 lessons · 10 min
  1. Scaling AI Applications
    Best practices for maintaining and monitoring AI apps in the wild.
    5 min
  2. Summary and Next Steps
    Reviewing the journey and exploring the evolving AI landscape.
    5 min
Final project

The 'Knowledge Base Assistant'

Build a complete RAG-based application that allows users to upload a set of documents and ask questions about them using a Hugging Face model and LangChain agents.

What you'll get

  • 📜 Certificate of completion
    Add it to your LinkedIn profile
  • 💬 Personal AI tutor
    Stuck on a lesson? Ask your built-in tutor anything, any time.
  • 🎧 Audio version included
    Learn on the go — no screen needed
  • ♾️ Lifetime access
    Come back anytime, no expiry
  • 📱 Phone or computer
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  • 💸 14-day refund
    No questions asked
  • ⚡ Short & focused
    3h 6m of practical content

Certificate of completion

Every course you complete on PickAClass issues a credential like this — original, with its own code, verifiable by URL, and detailed about what was actually demonstrated.

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Certificate of Mastery
This certifies that
Name Surname
has successfully demonstrated mastery of
Building Generative AI Apps with LangChain and Hugging Face
Skills demonstrated
✓
Behavioral pattern analysis
Foundational
1.2 hrs
✓
Decision-architecture frameworks
Proficient
1.4 hrs
✓
A/B test design
Proficient
1.7 hrs
✓
Behavioral copywriting
Advanced
1.9 hrs
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PickAClass — Name Surname
Building Generative AI Apps with LangChain and Hugging Face
Page 2 of 2
Performance detail
Coursework summary
Lessons completed 14 / 14
Practice questions 26 / 28
Assignments submitted 4 (avg 4.5 / 5)
Capstone project Reviewed — 4.6 / 5
Total practice 6.2 hrs
Performance benchmark
Cohort rank Top 12% of 1,625
Time to completion 11 days (median: 22)
Mastery score 91 / 100
Practice-question score 94%
Skill verification Verified Skill Path
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pickaclass.com/certificates/PCC-2026-X4F7-AP19
Issued under the academic standards of PickAClass. Skill levels reflect assessed performance against the course's competency rubric. This is an original credential of this platform.

Reviews (5)

Wubshet Ayele ET Verified learner
★ 4 · September 17, 2026

Hmm, I'm not sure this is for absolute beginners. It assumes a bit of prior knowledge that wasn't explicitly taught. Some examples were confusing.

Bram de Vries NL
★ 1 · September 3, 2026

Found it a bit dry, tbh. The examples weren't always the most relevant, making it hard to stay engaged through some of the modules.

Chen Wei KE Verified learner
★ 3 · August 26, 2026

It's a decent introduction. Could benefit from more diverse examples and a slightly better flow between modules.

Бахытжан Омаров KZ Verified learner
★ 4 · August 16, 2026

A truly excellent learning experience. The flow was logical and the examples were super helpful.

মোশাররফ হোসেন BD
★ 4 · June 24, 2026

It's a solid course. The structure is logical and most of the examples were helpful. Could use a few more real-world scenarios though.

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