30 terms and growing

AI words, finally explained like a human would say them.

Every definition is written at a sixth-grade reading level and still technically correct — with an analogy, a job-site example, and a business example for each term.

Word of the Day

Inference

Models

IN-fer-ens

1/5 · Easy

Inference is when an AI uses what it has already learned to answer a question, make a prediction, or complete a task.

Think of it like… Studying for a test is training. Taking the test is inference.

Why it's featured — Featured because inference is the moment AI actually does its job. Once you know this word, every conversation about speed, cost, and quality of AI makes more sense.

Lesson browser

Terms are grouped into numbered lessons of ten. New lessons are added over time.

Your practice

Try It Yourself progress

Loading your progress…

Streak & weekly recap

Loading your streak…

By category

  • Agents0/6 · 0%
  • Models0/8 · 0%
  • Data0/4 · 0%
  • Infrastructure0/4 · 0%
  • Fundamentals0/8 · 0%

Saved on this device. Sign in to keep it across devices.

Spaced review

Loading…

0 of 30 terms started · scheduled by difficulty and how well you recalled them.

Start reviewing
Points, streak & badges

XP

Level 1 · Apprentice

0 of 15 badges

100 XP to level 2 · each exercise is 10 XP, each finished category is a 50 XP bonus, plus 5 XP per streak day and 25 XP per streak week.

  • First Nail1 more exercise
  • Foundation Poured5 more exercises
  • Framed Up10 more exercises
  • Walls Are Up25 more exercises
  • Agents Pro6 left in Agents
  • Models Pro8 left in Models
  • Data Pro4 left in Data
  • Infrastructure Pro4 left in Infrastructure
  • Fundamentals Pro8 left in Fundamentals
  • Topped Out30 exercises to go
  • Three in a Row3 more days in a row
  • Full Week Crew7 more days in a row
  • Two-Week Run14 more days in a row
  • Month on Site30 more days in a row
  • Four Weeks Steady4 more weeks in a row

Next up: First Nail1 more exercise

Loading your schedule…

Find a term

Up to difficulty
5/5

30 terms

Agent

Agents

AY-jent

An AI worker that has a specific job to do.

1/5 · Easy

Algorithm

Fundamentals

AL-go-rith-um

A list of steps that tells a computer how to solve a problem.

2/5 · Getting there

API

Infrastructure

A-P-I

A doorway that lets two pieces of software talk to each other.

3/5 · Trickier

Automation

Infrastructure

aw-toh-MAY-shun

Setting up work so it happens by itself, without someone doing it each time.

1/5 · Easy

Autonomous Agent

Agents

aw-TON-oh-mus AY-jent

An AI agent that can complete tasks on its own within rules you give it.

4/5 · Advanced

Benchmark

Fundamentals

BENCH-mark

A standard test used to compare how well different AI models perform on the same task.

2/5 · Getting there

Calibration

Fundamentals

kal-ih-BRAY-shun

Adjusting an AI system so its answers become more accurate and reliable.

3/5 · Trickier

Context Window

Models

KON-text WIN-doh

How much information an AI can hold in mind at one time.

3/5 · Trickier

Embedding

Data

em-BED-ing

Turning words or documents into numbers so a computer can tell which ones mean similar things.

4/5 · Advanced

Fine-Tuning

Models

FYNE TOON-ing

Extra training that teaches a general AI the specifics of your work.

3/5 · Trickier

Guardrails

Fundamentals

GARD-rayls

The rules and limits you set so an AI stays safe and on task.

2/5 · Getting there

Hallucination

Fundamentals

huh-LOO-sih-NAY-shun

When an AI confidently gives an answer that is simply made up.

2/5 · Getting there

Human in the Loop

Agents

HYOO-mun in the LOOP

A setup where a person reviews or approves what the AI does before it counts as final.

2/5 · Getting there

Inference

Models

IN-fer-ens

Inference is when an AI uses what it has already learned to answer a question, make a prediction, or complete a task.

1/5 · Easy

Latency

Infrastructure

LAY-ten-see

The delay between asking an AI something and getting the answer back.

2/5 · Getting there

Machine Learning

Fundamentals

muh-SHEEN LURN-ing

A way of teaching a computer by showing it lots of examples instead of writing out every rule.

2/5 · Getting there

Model

Models

MOD-ul

The AI's brain that has learned from lots of information.

2/5 · Getting there

Multi-Agent System

Agents

MUL-tee AY-jent SIS-tem

Many AI agents working together while sharing information.

3/5 · Trickier

Multimodal

Models

muhl-tee-MOH-dul

An AI that can handle more than one kind of input — text, images, audio, or video together.

3/5 · Trickier

Nano AI-Driven Ecosystem

Agents

NAN-oh A-I EE-koh-sis-tem

A group of very small AI programs that each have one job, but they work together like a team to solve bigger problems.

3/5 · Trickier

Neural Network

Models

NOOR-ul NET-wurk

A math structure loosely modeled on the brain, made of layers that pass signals along to spot patterns.

3/5 · Trickier

Orchestrator

Agents

OR-kes-tray-tor

The AI manager that tells all the other AI agents what to do.

3/5 · Trickier

Prompt

Fundamentals

PROMPT

The instructions or question you give an AI so it knows what you want.

1/5 · Easy

Prompt Engineering

Fundamentals

PROMPT en-jih-NEER-ing

The skill of writing instructions that get better answers from AI.

2/5 · Getting there

Retrieval-Augmented Generation (RAG)

Data

RAG

A method where the AI looks up your real documents before answering, instead of guessing.

4/5 · Advanced

Temperature

Models

TEM-pur-uh-chur

A setting that controls how predictable or creative an AI's answers are.

3/5 · Trickier

Token

Models

TOH-kun

A small chunk of text — roughly part of a word — that an AI reads and writes one piece at a time.

2/5 · Getting there

Training Data

Data

TRAY-ning DAY-ta

The information an AI studied in order to learn.

2/5 · Getting there

Vector Database

Data

VEK-tor DAY-ta-base

A special kind of memory that helps AI quickly find information that is similar.

4/5 · Advanced

Vector Database

Infrastructure

VEK-tor DAY-tuh-bays

A place to store embeddings so an AI can quickly find the most similar pieces of your content.

4/5 · Advanced