What is an LLM?
A Large Language Model (LLM) is a type of artificial intelligence model trained on massive datasets of text. LLMs can understand context, generate coherent text, answer questions, summarize content, and perform a wide range of language tasks.Popular LLMs
| Model | Provider | Key Strength ||-------|----------|-------------|
| GPT-5 | OpenAI | Strong reasoning and multimodal capabilities |
| Gemini 2.5 | Google | Excellent at multimodal and long-context tasks |
| Claude | Anthropic | Strong safety and instruction following |
How LLMs Power Chatbots
In AI customer support, LLMs serve as the "brain" that:1.Understands the visitor's question in natural language
2.Processes retrieved context from your knowledge base
3.Generates a helpful, human-like response
4.Maintains conversation context across multiple messages
Limitations
•Hallucination — May generate plausible but incorrect information
•Knowledge cutoff — Training data has a fixed date
•Context window — Limited amount of text they can process at once
RAG systems address these limitations by grounding LLM responses in your actual content.