Headroom App

Headroom is a menu bar app for macOS, Windows and Linux that cuts Claude Code and ChatGPT Codex token costs by ~50%, which can translate to up to 2x as much usage on the plan you already pay for.

It quietly optimizes the inputs your coding agent sends by compressing the bulky tool output, logs, and boilerplate that devour tokens. Compression runs locally, before the request leaves your machine, so your prompts and code stay private. Source code passes through untouched, and the originals stay available to the agent through a retrieval tool.

On the noisiest inputs (JSON tool results, logs, long documents) compression runs at ~50% and up; typical real-world coding sessions land around 25-50% overall. In production, across 183 Claude Code users over one week, Headroom reduced input tokens by 34% (measured) and output tokens by 33% (estimated).

The app is built on the open-source Headroom engine and adds one-click setup, a savings dashboard, an activity feed, project learnings that turn past sessions into token-saving rules, and one-click add-ons such as MarkItDown, Serena, Codebase Memory, Context7, Ponytail and Caveman.

7-day free trial, no credit card. Paid plans are matched to your Claude or ChatGPT tier, from $3/month billed annually.