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LLM (Large Language Model)

AI models that understand and generate text

What is LLM (Large Language Model)?

AI systems trained on massive text datasets that can understand, generate, and reason about language. GPT-4, Claude, Gemini are all LLMs. They've fundamentally changed content creation, research, and coding workflows. If you're not using LLMs daily in 2025, you're leaving productivity on the table.

How it works

Key takeaways

  • Predicts next tokens, doesn't truly 'understand'

  • Quality depends on training data scale

  • Foundation for chatbots, agents, copilots

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Real-world example

You type 'Write a product description for sneakers' and the LLM generates polished copy in seconds. It doesn't know your product, it patterns from billions of examples it saw during training.