OpenTab

Your AI coding tools keep a tab. OpenTab opens it.

See where your coding agents spent their tokens, time, and money.

OpenTab brings the history your tools already keep into one interactive browser. Follow a busy month into a project, a session, its subagents, and individual turns. See what filled the context window. Compare the same token usage at another model's prices.

Works with **Claude Code, Codex, OpenCode, Copilot, [and more](#the-tools-it-reads)**. Runs locally, in your **terminal or web browser**. No account, no telemetry, and your agents' history stays read-only.

Find the session behind the spike. Explore the calendar and drill from a month into the work behind it. Anonymized demo data; click for the full-quality video.

Try it on your own history

pipx install opentab-ai
opentab

OpenTab discovers supported tools' local records and brings them together automatically. Start with a recent day, open **Sessions**, and pick one you remember. Press **Enter** to drill in, **Esc** to step back, and **?** for the keys that work where you are. The mouse works too.

On a subscription? You can still explore your usage: OpenTab starts with clearly labeled API-equivalent estimates for tokens that have no recorded cost. **`$`** switches to recorded spend. [How the money works](#about-the-money).

Python **3.9+** · macOS · Linux · WSL · native Windows.

More ways to install and upgrade

The PyPI package is **`opentab-ai`**; the command is **`opent