# Blacksmith

Hosted GitHub Actions runners on Linux (x64 and arm64), Windows and macOS, billed per minute, with a co-located cache, Docker layer caching and sticky disks.

- Operated by: Blacksmith Software Inc
- Status: Active [1]
- Website: https://www.blacksmith.sh
- Categories: CI runners
- Checked: 31 Oct 2026

## Blacksmith runners (CI runners)

- Lowest price: $0.0025 /min (blacksmith-2vcpu-ubuntu-2404-arm)
- 5-min job: ≥ $0.02 (Linux x64, 2 vCPU · rank 7 of 15)
- Billed: unknown (metered: usage billed afterwards)
- Sizes: 17 sizes (Linux, Windows, macOS · 2–32 vCPU)

### Billing

- Payment: Metered: usage billed afterwards [1]
- Plan minimum: None [1]
- Billing increment: unknown (Prices are per minute; neither the pricing page nor the docs say how partial minutes are rounded) [1]
- Minimum charge: unknown (No minimum billed time stated on the pricing page or docs) [1]
- Per-job fee: None [1]

### Limits

- vCPU: unknown (Docs describe Firecracker microVMs on bare-metal hosts but do not say whether vCPUs are dedicated) [2]
- Concurrent jobs: Unlimited [2]
- Max job length: unknown (No job time limit stated in the runner docs) [2]

### Setup

- Setup billed: unknown (Docs and pricing page do not say whether microVM boot time is billed) [2]
- Billed setup per job: unknown (Docs and pricing page do not say whether microVM boot time is billed) [2]

### Platform

- CI systems: GitHub Actions [3]
- Hosting: Managed [3]
- Regions: us-east, us-west, eu-west, eu-central [3]

### Free allowance

- Minutes a month: 3,000 [3]
- Credit a month: None [3]
- One-time credit: None [3]

### Cache

- Included: 25 GB [1]
- Extra storage: $0.5 per GB-month [1]
- Docker layer cache: Yes [1]
- Persistent disks: Yes [1]

### Features

- SSH debugging: Yes [4]
- Static IPs: Yes [4]
- GPU runners: No [4]
- SOC 2: Yes [4]

### Prices

| Size | OS | Arch | vCPU | RAM | Disk | CPU | Plan | Price | Per minute |
|---|---|---|---|---|---|---|---|---|---|
| blacksmith-2vcpu-ubuntu-2404 | Linux | x64 | 2 | 8 GB | 80 GB | unknown | any | $0.004 /min [1] | $0.004 |
| blacksmith-4vcpu-ubuntu-2404 | Linux | x64 | 4 | 16 GB | 80 GB | unknown | any | $0.008 /min [1] | $0.008 |
| blacksmith-8vcpu-ubuntu-2404 | Linux | x64 | 8 | 32 GB | 160 GB | unknown | any | $0.016 /min [1] | $0.016 |
| blacksmith-16vcpu-ubuntu-2404 | Linux | x64 | 16 | 64 GB | 750 GB | unknown | any | $0.032 /min [1] | $0.032 |
| blacksmith-32vcpu-ubuntu-2404 | Linux | x64 | 32 | 128 GB | 1500 GB | unknown | any | $0.064 /min [1] | $0.064 |
| blacksmith-2vcpu-ubuntu-2404-arm | Linux | arm64 | 2 | 6 GB | 75 GB | unknown | any | $0.0025 /min [1] | $0.0025 |
| blacksmith-4vcpu-ubuntu-2404-arm | Linux | arm64 | 4 | 12 GB | 75 GB | unknown | any | $0.005 /min [1] | $0.005 |
| blacksmith-8vcpu-ubuntu-2404-arm | Linux | arm64 | 8 | 24 GB | 160 GB | unknown | any | $0.01 /min [1] | $0.01 |
| blacksmith-16vcpu-ubuntu-2404-arm | Linux | arm64 | 16 | 48 GB | 750 GB | unknown | any | $0.02 /min [1] | $0.02 |
| blacksmith-32vcpu-ubuntu-2404-arm | Linux | arm64 | 32 | 96 GB | 1500 GB | unknown | any | $0.04 /min [1] | $0.04 |
| blacksmith-2vcpu-windows-2025 | Windows | x64 | 2 | 7 GB | 130 GB | unknown | any | $0.008 /min [1] | $0.008 |
| blacksmith-4vcpu-windows-2025 | Windows | x64 | 4 | 14 GB | 130 GB | unknown | any | $0.016 /min [1] | $0.016 |
| blacksmith-8vcpu-windows-2025 | Windows | x64 | 8 | 28 GB | 130 GB | unknown | any | $0.032 /min [1] | $0.032 |
| blacksmith-16vcpu-windows-2025 | Windows | x64 | 16 | 56 GB | 130 GB | unknown | any | $0.064 /min [1] | $0.064 |
| blacksmith-32vcpu-windows-2025 | Windows | x64 | 32 | 112 GB | 130 GB | unknown | any | $0.128 /min [1] | $0.128 |
| blacksmith-6vcpu-macos-latest | macOS | arm64 | 6 | 24 GB | 150 GB | Apple M4 | any | $0.08 /min [1] | $0.08 |
| blacksmith-12vcpu-macos-latest | macOS | arm64 | 12 | 48 GB | 250 GB | Apple M4 | any | $0.16 /min [1] | $0.16 |

- The free allowance is 3,000 x64 2-vCPU minutes per month per organization; other sizes draw from it at their price ratio (ARM 2-vCPU 0.625, Windows 2-vCPU 2, macOS 6-vCPU 20 x64 2-vCPU minutes per minute).
- Actions cache is free up to 25 GB per repository (entries unused for 7 days are evicted); Docker layer caching and sticky disks cost $0.50 per GB per month.
- Static IPs cost $100 per IP per month and are set up through support.
- Windows runners are in public beta; Docker Linux containers are not supported on them.
- The docs say jobs may be moved to the next larger size at no extra cost when the fleet has spare capacity.
- Enterprise plan (contact sales) adds a 99.9% SLA and priority support; startup and open-source discounts are available on request.
- Speed figures on the pricing page (2x faster than GitHub-hosted runners, 4x faster cache downloads) are vendor claims.

## Sources

[1] https://www.blacksmith.sh/pricing (checked 31 Oct 2026)
[2] https://docs.blacksmith.sh/blacksmith-runners/concurrency (checked 31 Oct 2026)
[3] https://docs.blacksmith.sh/blacksmith-runners/overview (checked 31 Oct 2026)
[4] https://www.blacksmith.sh/security (checked 31 Oct 2026)