Developer Tools · head to head
Spacelift vs Yarn
Spacelift
Developer Tools
Infrastructure-as-code orchestration for Terraform, OpenTofu, Pulumi and Kubernetes
- From
- Free
- Rated
- -
The short version
- Each has a real cost: Spacelift users are unlimited and private workers are metered, so deployment concurrency rather than headcount drives the bill, which inverts how most engineering budgets are built and is easy to under-forecast.; Yarn yarn 2+ (Berry) has limited ESM support which can be a constraint for some projects
- Prices and features above were last checked on 31 August 2026.
Where they differ
Only the attributes on which Spacelift and Yarn actually diverge.
Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Developer Tools).
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 Spacelift
- Multi-tool orchestration
- Policy as code
- Private workers
- Spaces
- Blueprints
- Drift detection
Only in Yarn
Nothing recorded that Spacelift does not also cover.
What people use each for
The jobs each tool is most often brought in to do.
Spacelift
- Platform teams running infrastructure changes through approval gates rather than through application CInot Yarn
- Organisations standardising Terraform and OpenTofu across many teams with policy enforcementnot Yarn
- Estates needing private runners so cloud credentials never leave the networknot Yarn
- Teams wanting drift detection and reconciliation rather than plan-time checks alonenot Yarn
Yarn
- Monorepo teams managing dependencies across 50+ interdependent packagesnot Spacelift
- Enterprise JavaScript projects ensuring reproducible builds across CI/CDnot Spacelift
- Open-source projects with plugin ecosystems coordinating versionsnot Spacelift
- Teams requiring consistent package installs regardless of network conditionsnot Spacelift
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Spacelift
- Users are unlimited and private workers are metered, so deployment concurrency rather than headcount drives the bill, which inverts how most engineering budgets are built and is easy to under-forecast.
- There is no affordable paid entry point. The free tier stops at two users and the next tier is a five-figure commitment with nothing in between.
- Three of the five tiers are quote-only, so a shortlist cannot be costed without entering a sales process with each vendor on it.
- The self-hosted build lags the hosted one, has no public worker pool and lacks the Azure and Google Cloud integrations available in the SaaS product, with OIDC federation offered as the workaround.
- Stacks, Rego policies, Blueprints, Spaces and Spacelift-managed state are proprietary constructs, so leaving means rebuilding the orchestration layer rather than pointing it at a different runner.
Yarn
- Yarn 2+ (Berry) has limited ESM support which can be a constraint for some projects
- Smaller ecosystem and community compared to npm, though still substantial
Pricing, plan by plan
Spacelift
Free- FreeFree
- Two users
- Public workers only
- No private workers
- Starter Plus$undefined/year
- Unlimited users
- Two public workers
- One to two private workers
- Business$undefined/year
- Unlimited users
- Three private workers
- Quoted
- Enterprise$undefined/year
- Unlimited users
- Five to thirty private workers
- Self-hosted option
Yarn
FreeNo published plan breakdown. See the Yarn review.
Which should you pick?
Choose Spacelift if
- You need multi-tool orchestration.
- You want to start without paying.
- You work on Web, Self-hosted, Cloud.
- You also want policy as code.
Questions people ask
- Is Spacelift or Yarn better?
- Neither clearly leads. Spacelift starts at Free and Yarn at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Spacelift or Yarn?
- Spacelift starts at Free and Yarn at Free.
- Does Spacelift or Yarn run on more platforms?
- Spacelift runs on Web, Self-hosted, Cloud. Yarn runs on Web, Linux, macOS, Windows.
- Can I use Spacelift for free?
- Both have a free tier, so you can try either at no cost before committing.
- What is Spacelift best used for?
- Spacelift is most often used for platform teams running infrastructure changes through approval gates rather than through application ci, organisations standardising terraform and opentofu across many teams with policy enforcement, estates needing private runners so cloud credentials never leave the network, teams wanting drift detection and reconciliation rather than plan-time checks alone. Of those, platform teams running infrastructure changes through approval gates rather than through application ci and organisations standardising terraform and opentofu across many teams with policy enforcement are not what Yarn is typically brought in for.
- What can Spacelift do that Yarn cannot?
- Spacelift covers Multi-tool orchestration, Policy as code, Private workers, Spaces.
Answered from the vendors’ own pages
Spacelift: How is Spacelift priced?
By tier and by private worker count rather than per user. Users are unlimited on every paid plan. The published figure on the pricing page carries no period label, and the FAQ describes the tier as an annual subscription, so confirm the period in writing.
Yarn: What is Yarn's main advantage over npm?
Yarn downloads packages in parallel, significantly reducing installation time. It uses a yarn.lock file for deterministic installs, ensuring identical package versions across machines and preventing version conflicts common with npm.
SourceSpacelift: Does it support OpenTofu?
Yes, and Spacelift sponsors the OpenTofu project, which is a substantive hedge for anyone avoiding Terraform under the Business Source Licence.
Yarn: Can I use Yarn in offline environments?
Yes, Yarn supports secure offline environments. The yarn.lock file enables reproducible installs without requiring new downloads.
SourceSpacelift: Is there a self-hosted version?
Yes, described as carrying Enterprise functionality, but it is priced on request and lags the hosted product on cloud integrations.
Spacelift: Why not just use the CI system we already have?
That is the real comparison. General purpose CI handles state, drift, approval gates and concurrency control for infrastructure poorly, and whether that is worth a five-figure floor depends on how much infrastructure change your organisation actually ships.
Spacelift: What happens to our pipelines if we leave?
They do not port. Rego policies, Blueprints, Spaces and managed state are Spacelift constructs and the orchestration has to be rebuilt elsewhere.
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