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Blacksmith vs Ruby on Rails

Blacksmith logo

Blacksmith

Developer Tools

2x faster GitHub Actions with 60% cost savings

From
Free
Free plan
Yes
Ruby on Rails logo

Ruby on Rails

Web Development

A full-stack framework for building web applications

From
Free
Free plan
Yes

The short version

  • Each has a real cost: Blacksmith per-minute pricing model requires estimating usage to predict costs; Ruby on Rails licensed under the MIT License per rubyonrails.org; as open source software it has no paid tier or vendor price to compare
  • Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which Blacksmith and Ruby on Rails actually diverge.

Attributes where Blacksmith and Ruby on Rails differ
AttributeBlacksmithRuby on Rails
Pricing modelUnknownopen-source
PlatformsGitHub Actions, Linux, Windows, macOSWeb
CategoryDeveloper ToolsWeb Development

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Blacksmith

  • Bare metal runners
  • Multiple OS support
  • ARM support
  • Docker layer caching
  • Sticky disks
  • GitHub Actions observability
  • Free tier
  • Static IPs

Only in Ruby on Rails

Nothing recorded that Blacksmith does not also cover.

What people use each for

The jobs each tool is most often brought in to do.

Blacksmith

  • Replacing GitHub Actions runners with faster, cheaper infrastructurenot Ruby on Rails
  • Accelerating CI build times for organizations with heavy CI loadnot Ruby on Rails
  • Reducing cloud spend on GitHub Actions by 60% or morenot Ruby on Rails
  • Supporting ARM architecture builds without GitHub runnersnot Ruby on Rails

Ruby on Rails

  • Building e-commerce platforms that scale from startup to IPOnot Blacksmith
  • Developing SaaS applications with consistent conventions across teamsnot Blacksmith
  • Creating marketplace platforms like Airbnb with transactional workflowsnot Blacksmith
  • Integrating cloud file storage and real-time WebSocket updatesnot Blacksmith
  • Enforcing encryption and security protections against common attacksnot Blacksmith

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Blacksmith

  • Per-minute pricing model requires estimating usage to predict costs
  • macOS M4 pricing ($0.08/min) is significantly higher than GitHub Actions
  • Docker layer caching and sticky disks are paid add-ons at $0.50/GB/mo
  • Static IP add-on costs $100/IP/mo

Ruby on Rails

  • Licensed under the MIT License per rubyonrails.org; as open source software it has no paid tier or vendor price to compare
  • The framework is Ruby-only by design, per rubyonrails.org's own description of its convention over configuration approach, requiring the Ruby runtime rather than supporting alternate languages

Pricing, plan by plan

Blacksmith

Free
  • Ubuntu x64$0.004/minute
    • 3,000 free minutes per month
    • 2x faster hardware
    • 4x faster cache downloads
  • Ubuntu ARM$0.0025/minute
    • 3,000 free minutes per month
    • 2x faster hardware
    • 4x faster cache downloads
  • Windows x64$0.008/minute
    • 3,000 free minutes per month
    • 2x faster hardware
    • 4x faster cache downloads
  • macOS M4$0.08/minute
    • 3,000 free minutes per month
    • 2x faster hardware
    • 4x faster cache downloads

Ruby on Rails

Free

No published plan breakdown. See the Ruby on Rails review.

Which should you pick?

Choose Blacksmith if

  • You need bare metal runners.
  • You want to start without paying.
  • You work on GitHub Actions, Linux, Windows, macOS.
  • You also want multiple os support.

Choose Ruby on Rails if

  • You want to start without paying.

Questions people ask

Is Blacksmith or Ruby on Rails better?
Neither clearly leads. Blacksmith starts at Free and Ruby on Rails at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Blacksmith or Ruby on Rails?
Blacksmith starts at Free and Ruby on Rails at Free.
Does Blacksmith or Ruby on Rails run on more platforms?
Blacksmith runs on GitHub Actions, Linux, Windows, macOS. Ruby on Rails runs on Web.
Can I use Blacksmith for free?
Both have a free tier, so you can try either at no cost before committing.
What is Blacksmith best used for?
Blacksmith is most often used for replacing github actions runners with faster, cheaper infrastructure, accelerating ci build times for organizations with heavy ci load, reducing cloud spend on github actions by 60% or more, supporting arm architecture builds without github runners. Of those, replacing github actions runners with faster, cheaper infrastructure and accelerating ci build times for organizations with heavy ci load are not what Ruby on Rails is typically brought in for.
What can Blacksmith do that Ruby on Rails cannot?
Blacksmith covers Bare metal runners, Multiple OS support, ARM support, Docker layer caching.

Answered from the vendors’ own pages

Blacksmith: How much do Blacksmith runners cost compared to GitHub Actions?

Blacksmith offers 60-75% cost savings depending on OS. Ubuntu x64 costs $0.004/min vs GitHub at $0.012/min. All plans include 3,000 free minutes monthly.

Source
Ruby on Rails: Is Ruby on Rails free?

Yes, Ruby on Rails is free and open-source, licensed under the MIT License. There are no costs associated with using or distributing the framework.

Source
Blacksmith: Can I use Docker layer caching with Blacksmith?

Yes, Docker layer caching is available as an add-on at $0.50/GB/mo. Managed Docker layer persistence is included with the base service.

Source
Ruby on Rails: What is Ruby on Rails licensed under?

Ruby on Rails is licensed under the MIT License, a permissive open-source license that allows commercial and private use.

Source
Blacksmith: What is the SLA for Enterprise plans?

Enterprise Blacksmith plans include a 99.9% SLA guarantee along with 24/7 priority support, dedicated Slack channels, white-glove onboarding, and CI optimization support.

Source
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