OpenAI has launched Computer History, an opt-in feature for macOS that captures recent computer activity and turns it into memories and a timeline that ChatGPT and Codex can use, according to Frederic Lardinois’ report in The New Stack, surfaced by Techmeme. The provided summary describes Computer History as capturing a local timeline of Mac activity. The material facts available here are limited: the feature is opt-in, it is tied to macOS, and it is meant to give ChatGPT and Codex access to recent computer context through memories and a timeline. That makes the feature notable for how OpenAI is extending its assistants beyond a chat window. If a user enables it, ChatGPT and Codex can draw on recent activity from the computer rather than relying only on what the user manually pastes or describes. The current feed material does not specify rollout timing, account eligibility, retention settings, or what categories of Mac activity are included or excluded. It also does not detail how Computer History handles permissions beyond being opt-in. Who benefits: OpenAI benefits if richer local context makes ChatGPT and Codex more useful. Mac users who want continuity across recent activity may also benefit, subject to the feature’s controls. Who's exposed: The summary is too thin to assess privacy or security exposure in detail. The key known fact is that the feature is opt-in and captures a local timeline of Mac activity.