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Astro vs Deno

Astro logo

Astro

Web Development

Web framework for content-driven sites shipping minimal JavaScript by default

From
Free
Free plan
Yes
Full reviewWebsite
Deno logo

Deno

Developer Tools

A fast, open-source, fully Node-compatible JS runtime with TypeScript baked right in

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Each has a real cost: Astro limited to static site generation and server-side rendering; real-time applications requiring constant client-server communication are unsuitable; Deno egress bandwidth overage costs $0.20/GB which can become expensive for high-traffic applications
  • Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which Astro and Deno actually diverge.

Attributes where Astro and Deno differ
AttributeAstroDeno
Pricing modelopen-sourcefreemium
PlatformsWeb, Node.js, Cloudflare, Vercel, Netlify, AWS, DenoWeb
CategoryWeb DevelopmentDeveloper Tools

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

What people use each for

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

Astro

  • Marketing websites and landing pages prioritising performance and SEOnot Deno
  • Documentation and blog platforms with high page volumesnot Deno
  • E-commerce storefronts where page speed affects conversion ratesnot Deno
  • Portfolio and personal websites showcasing static content with minimal interactivitynot Deno
  • Multi-language sites requiring efficient content management and translationnot Deno
  • JAMstack projects integrating headless CMS platforms (Contentful, Sanity, Strapi)not Deno

Deno

  • Running TypeScript natively without transpilation overheadnot Astro
  • Migrating Node.js applications to secure-by-default runtimenot Astro
  • Deploying edge functions and serverless containers seamlesslynot Astro
  • Consolidating developer tools into single binarynot Astro

Where each one falls short

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

Astro

  • Limited to static site generation and server-side rendering; real-time applications requiring constant client-server communication are unsuitable
  • Smaller ecosystem compared to Next.js; fewer third-party component libraries and integrations readily available
  • Build time increases with large content volumes (1,000+ pages); incremental builds not yet as optimised as Gatsby or Next.js
  • API routes and serverless functions are less mature than Next.js; complex backend integrations require additional tooling

Deno

  • Egress bandwidth overage costs $0.20/GB which can become expensive for high-traffic applications
  • CPU time overage is $0.10/hour on Pro and Builder tiers, adding to costs for compute-intensive workloads
  • Enterprise pricing is not disclosed; requires sales contact

Pricing, plan by plan

Astro

Free

No published plan breakdown. See the Astro review.

Deno

Free
  • FreeFree
    • 1 million requests/month
    • 20GB egress bandwidth
    • 10 apps
  • Pro$20/month
    • 5 million requests/month
    • 200GB egress
    • 50 apps
  • Builder$200/month
    • 25 million requests/month
    • 2,000GB egress
    • 10,000 apps
  • Enterprise$null/month
    • Custom limits on all metrics
    • 99.95% reliability SLA
    • Email support with SLA

Which should you pick?

Choose Astro if

  • You want to start without paying.
  • You work on Web, Node.js, Cloudflare, Vercel, Netlify, AWS, Deno.
Astro review

Choose Deno if

  • You want to start without paying.
Deno review

Questions people ask

Is Astro or Deno better?
Neither clearly leads. Astro starts at Free and Deno at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Astro or Deno?
Astro starts at Free and Deno at Free.
Does Astro or Deno run on more platforms?
Astro runs on Web, Node.js, Cloudflare, Vercel, Netlify, AWS, Deno. Deno runs on Web.
Can I use Astro for free?
Both have a free tier, so you can try either at no cost before committing.
What is Astro best used for?
Astro is most often used for marketing websites and landing pages prioritising performance and seo, documentation and blog platforms with high page volumes, e-commerce storefronts where page speed affects conversion rates, portfolio and personal websites showcasing static content with minimal interactivity. Of those, marketing websites and landing pages prioritising performance and seo and documentation and blog platforms with high page volumes are not what Deno is typically brought in for.

Answered from the vendors’ own pages

Astro: Is Astro free?

Yes. Astro is free and open-source under MIT licence. Deployment hosting (Vercel, Netlify, Cloudflare, AWS) may incur costs depending on usage.

Source
Deno: How much does Deno Deploy cost?

Deno Deploy offers a free tier at $0/month, Pro at $20/month, and Builder at $200/month. Enterprise has custom pricing. All plans include base request and bandwidth limits, with overage charges for additional usage.

Source
Astro: Can I use React components in Astro?

Yes. Astro supports React, Vue, Svelte, Preact, and Solid components. Components are server-rendered by default; add client: directives to enable client-side interactivity only where needed.

Source
Deno: What are Deno Deploy's overage charges?

Egress bandwidth overages cost $0.20 per GB. CPU time overages are $0.10 per hour on Pro and Builder tiers. Memory time and KV database operations also incur charges beyond included limits.

Source
Astro: How does Astro compare to Next.js for performance?

Astro achieves superior Core Web Vitals scores (66% pass rate vs Next.js 30%) by shipping minimal JavaScript. Next.js defaults to client-side rendering; Astro renders on the server by default.

Source
Deno: How many apps can I deploy on Deno's free plan?

The free tier includes 10 apps with up to 1 concurrent build. Pro tier supports 50 apps with 3 concurrent builds, and Builder supports 10,000 apps with 20 concurrent builds.

Source
Deno: How many team members can access Deno Deploy?

The free tier supports up to 3 team members. Pro supports 10 team members. Builder supports 25 team members. Enterprise has custom seat limits.

Source
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