If you're building with LLMs in 2026, you already know the pain: API costs that creep up silently until your bill arrives and you wonder what happened.
I've been there. Running multiple models across different providers — OpenAI, Anthropic, Google — and having zero visibility into token consumption until the monthly invoice shows up. It's like driving without a speedometer.
The Problem
Most developers track API costs reactively. You check your dashboard once a week (or once a month, if you're being honest), and by then the damage is done. Maybe a runaway script burned through tokens overnight. Maybe your prompt engineering experiments used 10x more context than you expected.
The real issue isn't the cost itself — it's the lack of real-time awareness. When you can't see what's happening as it happens, you can't make good decisions.
What Actually Helps
After trying various approaches (spreadsheets, custom scripts, dashboard tab always open), I landed on something dead simple: a menu bar token counter.
I've been using TokenBar — it sits in your Mac menu bar and tracks token usage across providers in real time. No browser tab to forget about, no dashboard to check. Just a persistent, glanceable number that updates as you work.
The $5 lifetime price means it pays for itself the first time it catches you before an expensive mistake.
Why Real-Time Matters
Here's what changed for me:
- Prompt iteration is cheaper — I can see immediately when a prompt change doubles token usage
- No more bill shock — I know my daily burn rate at a glance
- Better architecture decisions — seeing token costs in real time made me rethink which calls actually need GPT-4 vs a smaller model
The Takeaway
If you're spending more than $50/month on LLM APIs, you need real-time visibility into your token usage. Whether you build your own solution or grab something off the shelf, stop flying blind.
The tools exist. The question is whether you'll keep guessing or start tracking.
What's your approach to tracking LLM costs? I'd love to hear what's working for other devs in the comments.
