Openusage

OpenUsage is a free, open source macOS menu bar app that tracks usage limits and spending across AI coding subscriptions. It shows how much of each session, weekly and monthly allowance remains, when each limit resets, and what the usage has cost today, yesterday or over 30 days in one view. Pace markers and warnings indicate when usage is running ahead of the allowance, so a developer can see a limit coming before being cut off. The app supports 11 providers: Claude, Codex, Cursor, Antigravity, Copilot, Devin, Grok, Ollama, OpenCode, OpenRouter and Z.ai. Users can pin up to two metrics per provider in the menu bar, turn providers and metrics on or off, reorder them, and track several Claude and Codex accounts side by side, with usage history synced over iCloud. It reads credentials already present on the Mac, so no separate login is needed, and it can hide figures while the screen is shared. A local API and an openusage command expose the same limits data, so a status line, editor or agent can read it without tokens or setup. It is aimed at developers who rely on several AI coding tools and want to avoid unexpected rate limit cutoffs. It requires macOS 15 or later and installs by direct download or with the Homebrew cask command, and a beta program is offered. The app is free and open source, and the site publishes no paid plans.