What is the best GitHub Actions runner alternative?
What should I use instead of GitHub-hosted runners?
The best alternative to GitHub-hosted runners is a managed runner service you switch to by changing runs-on: your workflows, secrets and logs stay in GitHub Actions, the jobs run on faster machines for less per minute, and there is nothing for you to operate. Judge providers on the hardware, the price per build, what is included, such as the cache and personal repositories, and how the switch works. Sengi is the one we recommend: AMD Ryzen 9 7950X3D bare metal boosting past 5 GHz with local NVMe and a fresh VM per job, builds up to 1.9× faster than GitHub’s runner, and the lowest per-minute price of the managed runners compared here, $0.003 at 2 vCPU.
Last checked October 23, 2026, against each provider’s published pricing page and runner documentation, and GitHub’s Actions runner pricing reference.
GitHub Actions runner alternatives compared
| Option | Who runs the machines | 2 vCPU per minute | Cache | Personal repositories |
|---|---|---|---|---|
| Sengi | Sengi. 5 GHz bare metal, local NVMe. | $0.003 | Included, Docker layers too | Yes, every size |
| Blacksmith | Blacksmith | $0.004 | Actions cache included; Docker layer caching $0.50 per GB a month | No |
| WarpBuild | WarpBuild | $0.004 | $0.20 per GB-month, plus per operation | Not listed |
| Depot | Depot | $0.006, on a plan from $20 a month | 25 GB on the $20 plan, then per GB | Not listed |
| Namespace | Namespace | $0.006 pay as you go | Metered per GB-day | Not listed |
| GitHub larger runners | GitHub | $0.006 (4 vCPU $0.012) | 10 GB per repository | No |
| RunsOn | You, in your own AWS account | Your AWS bill, plus a yearly licence | Your S3 bucket | Not listed |
| Self-hosted or Actions Runner Controller | You | Your machines and ops time | Yours to run | Yes |
Head to head: Blacksmith, Depot, Namespace, WarpBuild, RunsOn and BuildJet, every provider in one table in the runner comparison, and running your own in the self-hosted runner alternative.
What should I check before switching runners?
- Hardware you can name. Sengi publishes the CPU, an AMD Ryzen 9 7950X3D boosting past 5 GHz, and measures against GitHub: up to 3× the multi-core and 1.65× the single-core CPU, 15× the random-read disk speed.
- Cost per build, not just per minute. The same Rust, TypeScript and Docker builds at 4 vCPU cost $0.069 on Sengi, $0.073 on Blacksmith, $0.097 on WarpBuild, $0.098 on Namespace and $0.249 on GitHub.
- A fresh VM for every job, so nothing leaks between jobs. Sengi’s 2 vCPU jobs start on a pre-booted VM in 2 seconds.
- Platforms. Sengi runs Ubuntu 24.04 on x64; keep macOS, Windows and arm64 jobs where they are.
- The switch. One
runs-online per job, and one revert to go back. See how to switch runs-on.
Frequently asked questions
Is there a drop-in replacement for ubuntu-latest?
Yes. Most managed runner services run Ubuntu images built to match GitHub's runner, so most jobs move with a one-line runs-on change. Sengi's sengi-standard-2-ubuntu-2404 is 2 vCPU and 8 GB like a private-repository ubuntu-latest, on Ubuntu 24.04 x64 with Docker, Compose and Buildx installed.
What happened to BuildJet?
BuildJet announced on February 6, 2026 that it was shutting down, and its runners stopped running jobs on March 31, 2026. Workflows still on a buildjet label wait for a runner that never comes; Sengi maps each BuildJet x64 label to a Sengi label of the same size.
Which runner alternative works on personal repositories?
Sengi runs every size, 2, 4 and 8 vCPU, on personal repositories as well as organizations. GitHub's own 4 and 8 vCPU larger runners need an organization on Team or Enterprise Cloud, and Blacksmith runs organizations only.
Can I switch back to GitHub's runners?
Yes. Change runs-on back or revert the pull request that switched it, and the next run goes to GitHub's runners again. Your workflows never stop being GitHub Actions workflows.
The fastest hardware for your GitHub Actions.
AMD Ryzen 9 7950X3D desktop CPUs boosting past 5 GHz, on bare metal with local NVMe, a fresh VM for every job, and 2 vCPU jobs ready in 2 seconds. Builds finish up to 1.9× faster than on GitHub’s runners, and at up to half GitHub’s price per minute they cost up to 74% less per build. Change one runs-on line, or give your coding agent one prompt and it opens the pull request for you.