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Learn what AI agents are, how they differ from chatbots, and how they use tools, planning, and memory to complete real-world tasks autonomously.

Prompting changes the request, RAG adds your documents, fine-tuning changes the model. When to use each, what each costs you, and how they combine.

The best AI app courses for building with OpenAI, Claude, Gemini and other APIs. Free tutorials, hands-on projects and paths for every skill level.

Learn what Retrieval Augmented Generation (RAG) is, how it works step by step, and why it matters for building AI applications that use your own data.