| Hardware
An overview of the hardware configurations available for your CI jobs.
Blaze uses runner tags to specify hardware configurations. These tags are used in the runs-on property of your workflow.
Concurrency units give you flexibility: run standard jobs (1 unit), use compute jobs for enhanced performance (2 units), or combine units for larger machines.
macOS
| vCPU | RAM | Runner Tag | Xcode | Units |
|---|---|---|---|---|
| 4 | 12 GB | blaze/macos-26 | 26.2 | 1x |
| 8 | 24 GB | blaze/macos-26:lg | 26.2 | 2x |
| 4 | 12 GB | blaze/macos-15 | 16.4 | 1x |
| 8 | 24 GB | blaze/macos-15:lg | 16.4 | 2x |
Use blaze/macos-latest for the latest stable macOS.
Linux ARM64
Standard Runners
| vCPU | RAM | Runner Tag | Units |
|---|---|---|---|
| 2 | 6 GB | blaze/ubuntu-22.04 | 1x |
| 4 | 12 GB | blaze/ubuntu-22.04:lg | 2x |
Compute Runners
Enhanced CPU performance and high-speed memory.
| vCPU | RAM | Runner Tag | Units |
|---|---|---|---|
| 4 | 12 GB | blaze/compute/ubuntu-22.04 | 2x |
| 8 | 24 GB | blaze/compute/ubuntu-22.04:lg | 4x |
Linux AMD64
Standard Runners
| vCPU | RAM | Runner Tag | Units |
|---|---|---|---|
| 2 | 6 GB | blaze/ubuntu-22.04-amd64 | 1x |
| 4 | 12 GB | blaze/ubuntu-22.04-amd64:lg | 2x |
Compute Runners
Enhanced CPU performance and high-speed memory.
| vCPU | RAM | Runner Tag | Units |
|---|---|---|---|
| 4 | 12 GB | blaze/compute/ubuntu-22.04-amd64 | 2x |
| 8 | 24 GB | blaze/compute/ubuntu-22.04-amd64:lg | 4x |