Billing and cost
Why is my GitHub Actions bill so high?
Quick answer
Usually one of four things: macOS minutes, matrix explosion, no concurrency cancellation, or oversized runners.
The detail that matters
Check in that order. macOS at a 10× multiplier and uncancelled superseded runs together explain most surprising invoices.
Your next build could be twice as fast, at half the price
Start free. Migrating away is the same one line, and we publish that diff too.
Related
Am I billed when a GitHub Actions job fails?Yes. You are billed for the minutes consumed up to the point of failure, not for a successful outcome.Are GitHub Actions free for open source?Yes, on GitHub-hosted standard runners for public repositories, with no minute charge.Are GitHub Actions free for private repositories?No. Private repositories get a monthly included-minutes allowance by plan, then bill per minute.Do I pay a seat fee for managed runners?On runnerhut, no. Billing is per compute minute with no per-developer charge.