Inside an LLM: Tokens, Embeddings & Vector Databases Explained (Beginner Friendly) - AI made simple

What actually happens inside ChatGPT when you type a question? When you ask, “What is quantum computing?”, it feels like the AI understands you. But inside a Large Language Model (LLM), something very different is happening. In this video, we break down the full journey of your question: How sentences are split into tokens How tokens become embeddings How embeddings become vectors in high-dimensional space How a vector database performs similarity search And how the LLM generates a final response using probability You’ll understand: ✔ What tokens really are ✔ What embeddings actually …