GitHub Actions Changed Their Pricing — Here's a Free Calculator to See Your Exact Bill

I got a surprise bill from GitHub last month. My team had been running GitHub Actions workflows for months. We assumed the costs were minimal. Then January 2026 arrived, GitHub changed their pricing, and suddenly the numbers looked very different. The worst part was not the bill itself. The worst part was that I had no idea how to estimate what we were actually paying before it happened. GitHub's billing dashboard shows you what you spent. It does not show you what you will spend. It does not compare runner costs. It does not suggest optimizations. It just shows a number after the fact. So I built a tool to solve that problem. What I Built githubactionscost.online — a free GitHub Actions cost calculator that takes your workflow YAML and tells you exactly what it costs, across all three runner types, with AI-powered suggestions to reduce your bill. No signup. No credit card. No account. Paste your YAML, get your numbers. The Runner Pricing Problem Nobody Talks About Here is something th