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RAG: Build AI Systems With Custom Knowledge

RAG (Retrieval-Augmented Generation) lets AI models access and reason over your custom data — documents, databases, knowledge bases — instead of relying only on training data. It is the foundation of enterprise AI. Our courses teach you to build RAG systems from scratch.

4 courses40 lessonsFree to start
73%
Enterprise AI projects using RAG
Gartner 2025
35-60%
Accuracy improvement with RAG vs base models
Microsoft Research
+420%
RAG engineer job postings (2025-2026)
Indeed

Frequently Asked Questions

What is RAG?

RAG (Retrieval-Augmented Generation) is a technique that gives AI models access to external knowledge. Instead of relying solely on training data, the AI retrieves relevant documents from your data and uses them to generate accurate, grounded responses.

Why is RAG important?

RAG solves AI hallucination by grounding responses in real data. It lets you build AI systems that know about YOUR business — your docs, products, policies — without expensive model fine-tuning.

What are vector databases?

Vector databases store data as mathematical representations (embeddings) that capture meaning. When you search, they find semantically similar content — not just keyword matches. Popular options include Pinecone, Weaviate, and Supabase pgvector.

Do I need to know machine learning for RAG?

No. Our courses teach RAG using pre-built embedding models and vector databases. You need basic coding skills (Python or JavaScript), but no ML expertise.

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