📚 Glossary
LLM (Large Language Model)
In one line: An AI model trained on huge amounts of text that can read and generate natural language. ChatGPT, Claude and Gemini are all LLMs.
A Large Language Model (LLM) is an AI model trained on massive amounts of text — books, websites, code — that learns to predict the next word in a sequence. By doing this, it picks up grammar, facts, reasoning patterns and conversational style.
'Large' typically means billions to trillions of parameters. Examples:
- GPT-4o — OpenAI
- Claude Sonnet 4 — Anthropic
- Gemini 2.5 Pro — Google
- Llama 3 — Meta (open-weights)
- DeepSeek R1 — DeepSeek (open-weights)
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