AI agent — An AI system that doesn't just answer once but works toward a goal in a loop — taking actions, reading the results, and deciding what to do next.
context window — The maximum amount of text a model can consider at once — its working memory for the current conversation or task.
Why it matters
Codex on macOS can now pull a live app window into a thread with Command-Command, sending both a screenshot and the window's text. This is a lower-friction way to give a coding AI agentAn AI system that doesn't just answer once but works toward a goal in a loop — taking actions, reading the results, and deciding what to do next.Full definition → visual and textual context windowThe maximum amount of text a model can consider at once — its working memory for the current conversation or task.Full definition → about what you are debugging.
