AI explained
Plain-language articles about the ideas behind modern AI. Start here if you want the concepts before the practical steps.
- How language models work
A practical mental model of tokens, training, context, and why fluent answers can still be wrong.
- What AI agents are
How models, tools, memory, and control loops combine into systems that can carry out multi-step work.
- Multimodal AI explained
How one system can work across text, images, audio, and video—and where modality-specific checks still matter.
- How Codex CLI works
A mental model of the interactive agent, repository context, configuration layers, tools, and verification loop.
- Codex CLI workflows and commands
When to use interactive sessions, exec, resume, review, profiles, slash commands, and machine-readable output.