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Blacksmith

CI runners

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 www.blacksmith.sh Status: active[1] Checked 31 Oct 2026

CI runners

Blacksmith runners

Compare 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

Prices

Blacksmith runners: runner sizes and prices
SizevCPURAMPrice
blacksmith-2vcpu-ubuntu-2404Linux x64 28 GB $0.004 /min[1]
blacksmith-4vcpu-ubuntu-2404Linux x64 416 GB $0.008 /min[1]
blacksmith-8vcpu-ubuntu-2404Linux x64 832 GB $0.016 /min[1]
blacksmith-16vcpu-ubuntu-2404Linux x64 1664 GB $0.032 /min[1]
blacksmith-32vcpu-ubuntu-2404Linux x64 32128 GB $0.064 /min[1]
blacksmith-2vcpu-ubuntu-2404-armLinux arm64 26 GB $0.0025 /min[1]
blacksmith-4vcpu-ubuntu-2404-armLinux arm64 412 GB $0.005 /min[1]
blacksmith-8vcpu-ubuntu-2404-armLinux arm64 824 GB $0.01 /min[1]
blacksmith-16vcpu-ubuntu-2404-armLinux arm64 1648 GB $0.02 /min[1]
blacksmith-32vcpu-ubuntu-2404-armLinux arm64 3296 GB $0.04 /min[1]
blacksmith-2vcpu-windows-2025Windows x64 27 GB $0.008 /min[1]
blacksmith-4vcpu-windows-2025Windows x64 414 GB $0.016 /min[1]
blacksmith-8vcpu-windows-2025Windows x64 828 GB $0.032 /min[1]
blacksmith-16vcpu-windows-2025Windows x64 1656 GB $0.064 /min[1]
blacksmith-32vcpu-windows-2025Windows x64 32112 GB $0.128 /min[1]
blacksmith-6vcpu-macos-latestmacOS arm64 624 GB $0.08 /min[1]
blacksmith-12vcpu-macos-latestmacOS arm64 1248 GB $0.16 /min[1]
  • 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.

Terms

Billing

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

Limits

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

Setup

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

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]

Sources

  1. 1 blacksmith.sh/pricing · 31 Oct 2026
  2. 2 docs.blacksmith.sh/blacksmith-runners/concurrency · 31 Oct 2026
  3. 3 docs.blacksmith.sh/blacksmith-runners/overview · 31 Oct 2026
  4. 4 blacksmith.sh/security · 31 Oct 2026

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