Cortex 1.0.2

New

• AI Usage: how much Claude Code and Codex you’ve used, read from the logs they keep on your Mac. Tokens by day, model and project, an estimated API cost, Claude Code’s current 5-hour window and Codex’s 5-hour and weekly limits.
• Claude plan limits: turn on Show Plan Limits in AI Usage to see the same session and weekly limits as Claude Code’s /usage, checked with Anthropic every 5 minutes while they’re on screen. Off until you turn it on.
• AI in the menu bar: a new AI figure shows your Claude session limit (or Codex’s, from its logs), and the popover lists both with their weekly limits and reset times.
• Thermals: temperatures for the CPU, GPU, memory, SSD and battery, with fan speeds and 30 days of history.
• Disk: the speed of each attached drive, internal and external, and a history of external drive activity.
• Battery: health and cycle count again on macOS 27, plus the cycles your battery is rated for.

Improved

• Overview: “Busiest right now” is now a table of the ten busiest apps with CPU, memory, disk and network. Click a column to sort by it.
• Claude Code and Codex show up by name with their icon, instead of as a version number such as “2.1.299”.
• An app’s history shows where it lives on disk, with a button to reveal it in Finder.
• A flat design: cards without borders, a cleaner screen header, and stat tiles that line up on every screen.
• Cortex uses about a quarter of the memory it did: around 55 MB instead of more than 200 MB with the window open.
• Quieter alerts: no more “memory will run out in X minutes” notifications (the forecast stays in the app), and alerts for unusual GPU, Neural Engine and network load are now off until you turn them on.
• Thermals has its own screen, so the CPU screen is shorter.

Fixed

• CPU, Neural Engine and memory power on macOS 27, which updates these figures only every few minutes. Cortex now shows the average over the last update window instead of 0 W.
• Neural Engine sessions sometimes missing for the first minutes after launch.
• Implausible P-core temperatures, such as 5 °C, from cores that are powered down.
• Small transfer rates read “127 bytes/s” next to “0 B/s”; they now read “127 B/s”.

Privacy

• The privacy policy describes the new, optional Claude plan limits check. Unless you turn it on, Cortex still makes only the update and license checks.