Agent

A model harnessed with tools, a system prompt, and a context window, that takes turns with a user. Claude Code is an agent. Cursor is an agent. Claude.ai is an agent. An agent is what you actually talk to — it's the model in motion, configured for a purpose.

Avoid: "the AI", "the bot" (too vague — they hide whether you mean the parameters or the harnessed thing).

Usage:

"Which agent are you using for the migration?"

"Claude Code locally, Cursor for the UI work — same model underneath, different harnesses."