# Large Language Model (LLM)

> A Large Language Model (LLM) is an AI model trained on vast amounts of text to understand and generate human language, powering tasks like writing, summarizing, extraction, and reasoning.

_Source: https://plenaura.com/glossary/llm · Last updated: 2026-06-03 · Plenaura_

## Key points

- Examples include GPT, Claude, Llama, Mistral, and Gemini families.
- Smaller, purpose-tuned models often beat large general ones on a specific task.
- Can run via cloud APIs or self-hosted on your own infrastructure.

## FAQ

### Do we need the biggest model available?

Rarely. For most business tasks, a smaller model tuned for the job (and deployed efficiently), matches or beats a giant general-purpose model at a fraction of the cost.