macOS runners for GitHub Actions

Run your workflows on an Apple silicon Mac Studio by changing runs-on. $1.10 an hour, billed by the second, with no plan fee and no minimum.

Set up

Connect GitHub

In the console, open CI, click Connect GitHub and install the offstage cloud app on your GitHub organization. You don't need an API key.

.github/workflows/ci.yml

on: [push, pull_request]
jobs:
  test:
    runs-on: offstage-macos
    steps:
      - uses: actions/checkout@v7
      - run: swift test

Use offstage-macos for headless CI, or offstage-macos-gui for jobs that need a desktop.

Public list prices for macOS runners, checked 7 November 2026, before included minutes and plan fees.

Runner	Machine	Rate	10-minute job
offstage	Sandbox on a Mac Studio M5 Max	$1.10 an hour, billed per second	$0.18
GitHub Actions	Standard macOS runner, M1, 3 cores	$3.72 an hour, billed per minute	$0.62
Namespace	macOS runner, 4 vCPU	$2.40 an hour prepaid; $3.60 overage	$0.40
Blacksmith	macOS M4, 6 vCPU	$4.80 an hour, billed per minute	$0.80

The machines differ, and the same build may take a different amount of time on each. We have not published a matched build-speed benchmark.
An offstage job is one of up to 8 sandboxes on a Mac Studio M5 Max, sharing its 18 CPU cores and 36 GB of memory. CPU and memory are not reserved per job.
GitHub rounds each job up to a whole minute; offstage bills per second. Your GitHub plan's included minutes may cover some of your work.
Sources: GitHub, Blacksmith, Namespace. Product names belong to their owners; offstage isn't affiliated with any of them.

A fresh macOS account on a Mac Studio. GitHub's runner runs that one job, and the account is wiped when it ends.
macOS 27 on Apple silicon, with Xcode 27.2, the iOS 27.2 simulator, Swift, SwiftPM, Apple clang, git and make.
Billing from the moment a Mac takes the job until it ends. Waiting for a Mac is free.

A job runs for at most 60 minutes.
Up to 4 jobs run at once per team; 16 more can queue.
No sudo and no Homebrew. Steps run as the account's own user, so install tools into the project or the home directory.
Public repositories use your organization's runners only if its runner group allows them (GitHub: Settings, Actions, Runner groups).

The full guide is in the docs.

New personal accounts get $5 in free credit, about four and a half hours of runtime, with no credit card needed.