concepts

Agents

Everyone keeps saying "agent" and I don't actually know what they mean.

Context engineering

What is context engineering, and how is it different from prompt engineering?

Effort level

What does "effort" or "reasoning effort" mean on a model?

Evals

How do I know if my AI feature or prompt is any good?

Fine-tuning

What is fine-tuning, and when is it worth it?

Harness

What do people mean by an "agent harness"?

Local vs cloud AI

Why can some AI tools touch my files and others can't?

MCP

Everyone's talking about MCP and I don't know what it is.

Open, open-weight, and proprietary models

What's the difference between an open-source model and an open-weight one?

Prompt injection

What is prompt injection?

RAG

What is RAG, and why do vendors keep bringing it up?

Skills

What's a "skill" in the context of AI agents?

Tokens

What's a token, and why does everything get measured in them?

Vibe coding

What is vibe coding?