Catch prompt loops before they become expensive
OpenAI token monitor
Monitor OpenAI token usage in real time on macOS.
TokenBar is a local-first menu bar app that keeps OpenAI token spend visible while prompts, agent loops, and retries are still running.
OpenAI token monitorOpenAI usage trackingOpenAI token counter macOSOpenAI spend monitor
Overview
What makes TokenBar useful in this workflow.
People searching for an OpenAI token monitor usually want one thing: immediate visibility. They do not want a dashboard that updates later after the useful debugging moment has already passed. TokenBar is built for that exact use case on macOS.
See retry churn while the OpenAI run is still active
Use a Basic $5 lifetime license instead of another subscription dashboard
Why an OpenAI token monitor matters
OpenAI costs often drift upward during debugging, not after it. A prompt loop, a tool retry, or a chain of agent calls can expand the session while you are still reading output. When the only signal arrives later on a billing page, the trail is already cold.
TokenBar keeps the cost signal in front of you in the macOS menu bar. That means you can notice the climb while the OpenAI session is still happening and fix the source before the run stretches into wasted spend.
What TokenBar shows during OpenAI sessions
TokenBar is meant to feel like a lightweight OpenAI usage tracker instead of a separate analytics habit. It surfaces session growth, request churn, and provider activity in the same environment where you are already testing prompts and tools.
For developers working with OpenAI APIs, the value is speed. You can see when a request path keeps moving, whether the session is growing faster than expected, and whether debugging changes are making the cost curve worse instead of better.
Built for macOS workflows
This page targets people looking for an OpenAI token monitor for macOS because that is exactly where TokenBar runs. It lives in the menu bar, installs from a DMG, and is designed for developers who want low-friction visibility during live work.
If your workflow is prompt-heavy and you want fast local signal instead of another browser tab, TokenBar is the more direct answer than a general-purpose reporting tool.
FAQ
More direct answers for this query.
Does TokenBar work as an OpenAI usage tracker during active runs?
Yes. TokenBar is designed to keep OpenAI session growth visible while requests are still running so prompt loops and retries do not stay hidden until later.
What if my OpenAI traffic is coming through Cursor or another editor?
Visibility depends on the app integration and routing path. In editor workflows that use custom provider keys, TokenBar may rely on the underlying OpenAI provider connection instead of labeling the session as app-side traffic.
Is this just for OpenAI billing reports?
No. The point is not delayed reporting. The point is live visibility while you are still debugging and making changes.
Do I need a subscription to monitor OpenAI token usage?
No. TokenBar is sold as a Basic $5 lifetime license, so you can add OpenAI monitoring without another monthly SaaS bill.
Related pages
More ways TokenBar helps you stay ahead of AI spend.
Claude usage tracker
Claude Usage Tracker for macOS
Track Claude usage on macOS with a local-first menu bar app. TokenBar keeps fallback traffic, long-context growth, and live token usage visible.
Cursor usage tracking
Cursor Usage Tracking for macOS
Track supported Cursor usage and background AI request traffic on macOS. TokenBar helps keep compatible editor-side activity visible while coding sessions are still active.
AI token monitor
AI Token Monitor for macOS
AI token monitor for macOS covering OpenAI, Claude, supported Cursor workflows, Gemini, and more. TokenBar keeps live token usage visible in your menu bar.