Reference

AI & LLM Glossary

10+ essential AI, LLM, and prompt engineering terms explained for developers. From system prompts to RAG, tokens to fine-tuning.

AI Agent

TERM

An AI system that can autonomously plan and execute multi-step tasks, using tools and making decisions to achieve a goal.

Large Language Model (LLM)System Prompt

Context Window

TERM

The maximum amount of text (measured in tokens) that an AI model can process at one time, including both input and output.

Large Language Model (LLM)Token

Embeddings

TERM

Numerical vector representations of text that capture semantic meaning, enabling AI systems to measure similarity between pieces of text.

RAG (Retrieval-Augmented Generation)

Fine-tuning

TERM

The process of further training a pre-trained AI model on a specific dataset to improve its performance on a particular task or domain.

Large Language Model (LLM)Token

Large Language Model (LLM)

TERM

A type of AI model trained on massive amounts of text data, capable of understanding and generating human-like text across a wide range of tasks.

System PromptPrompt Engineering

Model Context Protocol (MCP)

TERM

An open standard by Anthropic that enables AI models to connect with external tools, data sources, and services through a unified interface.

AI Agent

Prompt Engineering

TERM

The practice of designing and optimizing text inputs (prompts) to get the best possible outputs from AI language models.

System PromptLarge Language Model (LLM)

RAG (Retrieval-Augmented Generation)

TERM

A technique that enhances AI responses by retrieving relevant information from an external knowledge base before generating a response.

Large Language Model (LLM)Context Window

System Prompt

TERM

A set of instructions given to an AI model before the user conversation begins, shaping its behavior, tone, and capabilities.

Large Language Model (LLM)Prompt Engineering

Token

TERM

The basic unit of text that AI models process. A token is roughly 4 characters or 0.75 words in English.

Context WindowLarge Language Model (LLM)

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