Custom Runners
Customize runners for cost and performance
Custom runners are not available for organizations created after 2025-07-01.
Choose from available CPU and disk presets to fit your price-performance preferences from the Custom Runners page.
The overall price for the selected configuration is displayed.
CPU configurations
| Config | Description | Arch | Capacity Type | Price per 1vCPU |
|---|---|---|---|---|
| large | High performance, current generation processors | x64 | OnDemand | $0.00126 |
| medium | High performance, previous generation processors | x64 | OnDemand | $0.00108 |
| small | Burst performance, older generation processors | x64 | OnDemand | $0.0009 |
| large | High performance, current generation processors | arm64 | OnDemand | $0.000945 |
| medium | High performance, previous generation processors | arm64 | OnDemand | $0.00081 |
| small | Burst performance, older generation processors | arm64 | OnDemand | $0.000675 |
| large | High performance, current generation processors | x64 | Spot | $0.000945 |
| medium | High performance, previous generation processors | x64 | Spot | $0.00081 |
| small | Burst performance, older generation processors | x64 | Spot | $0.000675 |
| large | High performance, current generation processors | arm64 | Spot | $0.000506 |
| medium | High performance, previous generation processors | arm64 | Spot | $0.000608 |
| small | Burst performance, older generation processors | arm64 | Spot | $0.000709 |
Disk configurations
| Config | Storage | IOPS | Throughput (MB/s) | Price |
|---|---|---|---|---|
| xlarge | 300GB | 12000 | 1000 | $0.009045 |
| large | 300GB | 8000 | 800 | $0.006164 |
| medium | 150GB | 5000 | 500 | $0.001695 |
| small | 150GB | 3200 | 250 | $0.000719 |
Optimization
The specific workflow runtime depends on various factors beyond just disk and CPU performance. It's a good idea to understand whether the workflow is CPU bound or IO bound for choosing the optimal configuration for your workflow.
A general rule to note is that the network infrastructure speeds (> 900MBps) are much higher than the disk throughput (~250-1000 MBps) and is unlikely to be a bottleneck. However, it could still be the limiting factor if the source (example: dockerhub) does not support high data transfer speeds.
Boot times
Boot times for custom runners can be slower than the default runners and take 45-60s.
Running Dependabot Workflows
You can run Dependabot update workflows on WarpBuild custom runners.
Enable Dependabot workflows on self-hosted runners on GitHub and check the Allow Dependabot check box while creating the custom runner on WarpBuild:
This setup will run all your Dependabot workflows on the WarpBuild custom runner.
For security reasons, when running Dependabot on GitHub Actions self-hosted runners, Dependabot updates will not be run on public repositories. Learn More.
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