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Web Development · head to head

shadcn/ui vs Thanos

shadcn/ui logo

shadcn/ui

Web Development

Copy-paste React components you own, not a dependency

From
Free
Rated
-
Full reviewWebsite
Thanos logo

Thanos

Cloud

Highly available Prometheus with long-term object storage

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: shadcn/ui no upgrade path: once copied, upstream fixes and improvements are yours to port by hand; Thanos several components — sidecar, store, querier, compactor, ruler — each with its own configuration and failure modes
  • They diverge on capability: shadcn/ui covers Copy, not install, Thanos covers Global query.
  • Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which shadcn/ui and Thanos actually diverge.

Attributes where shadcn/ui and Thanos differ
Attributeshadcn/uiThanos
PlatformsWebKubernetes, Linux, Docker
CategoryWeb DevelopmentCloud

Identical on both: starting price (Free), pricing model (Open source, no licence fee), 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 shadcn/ui

  • Copy, not install
  • Radix primitives
  • Tailwind styling
  • Themeable

Only in Thanos

  • Global query
  • Object storage retention
  • Deduplication
  • Downsampling

What people use each for

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

shadcn/ui

  • Projects already using Tailwind that need accessible components without a theming fightnot Thanos
  • Design systems that will diverge from any library’s defaults anywaynot Thanos
  • Teams who have been burned by breaking changes in component library upgradesnot Thanos

Thanos

  • Querying metrics across many clusters or regions from one placenot shadcn/ui
  • Retaining metrics for years without local disk growthnot shadcn/ui
  • Removing the gap that appears when a single Prometheus instance restartsnot shadcn/ui

Where each one falls short

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

shadcn/ui

  • No upgrade path: once copied, upstream fixes and improvements are yours to port by hand
  • Requires Tailwind and React, so it is not an option outside that stack
  • Component code lives in your repository, which grows it and puts maintenance on your team
  • Its popularity has made the default look recognisable, which undercuts the customisation argument

Thanos

  • Several components — sidecar, store, querier, compactor, ruler — each with its own configuration and failure modes
  • The compactor is a common source of operational trouble and must not run twice against the same bucket
  • Query latency over object storage is meaningfully higher than local Prometheus
  • Object storage costs and API request charges become real at high volume

Pricing, plan by plan

shadcn/ui

Free
  • shadcn/uiFree
    • Full functionality
    • Commercial use permitted
    • Community support

Thanos

Free
  • ThanosFree
    • Full functionality
    • No usage limits
    • Community support

Which should you pick?

Choose shadcn/ui if

  • You need copy, not install.
  • You want to start without paying.
  • You also want radix primitives.
shadcn/ui review

Choose Thanos if

  • You need global query.
  • You want to start without paying.
  • You work on Kubernetes, Linux, Docker.
  • You also want object storage retention.
Thanos review

Questions people ask

Is shadcn/ui or Thanos better?
Neither clearly leads. shadcn/ui starts at Free and Thanos at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, shadcn/ui or Thanos?
shadcn/ui starts at Free and Thanos at Free.
Does shadcn/ui or Thanos run on more platforms?
shadcn/ui runs on Web. Thanos runs on Kubernetes, Linux, Docker.
Can I use shadcn/ui for free?
Both have a free tier, so you can try either at no cost before committing.
What is shadcn/ui best used for?
shadcn/ui is most often used for projects already using tailwind that need accessible components without a theming fight, design systems that will diverge from any library’s defaults anyway, teams who have been burned by breaking changes in component library upgrades. Of those, projects already using tailwind that need accessible components without a theming fight and design systems that will diverge from any library’s defaults anyway are not what Thanos is typically brought in for.
What can shadcn/ui do that Thanos cannot?
shadcn/ui covers Copy, not install, Radix primitives, Tailwind styling, Themeable. Thanos covers Global query, Object storage retention, Deduplication, Downsampling.

Answered from the vendors’ own pages

shadcn/ui: Is shadcn/ui free?

Yes, open source and free for commercial use.

Thanos: Is Thanos free?

Yes, open source and CNCF-incubating. Costs are the object storage it uses.

shadcn/ui: Why is it not an npm package?

So you own the code. Components are copied into your project, which makes customisation trivial — at the cost of receiving no automatic updates.

Thanos: Does Thanos replace Prometheus?

No. It runs alongside existing Prometheus servers, adding global query, deduplication and long-term storage.

shadcn/ui: Do I need Tailwind?

Yes. Components are styled with Tailwind utility classes and built on Radix primitives, so both are required.

Thanos: Thanos or VictoriaMetrics?

Thanos layers onto Prometheus using object storage and is the more established multi-cluster answer. VictoriaMetrics is a separate store aiming at lower resource use and fewer moving parts.

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