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Software · head to head

Deno Deploy vs Flask

Deno Deploy logo

Deno Deploy

Software

Serverless JavaScript at the edge

From
Free
Rated
-
Full reviewWebsite
Flask logo

Flask

Software

A lightweight WSGI web application framework

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Deno Deploy smaller ecosystem compared to AWS Lambda with fewer third-party integrations; Flask requires manual configuration of many common features like authentication, ORM, and admin panels
  • They diverge on capability: Deno Deploy covers Edge Functions, Flask covers Lightweight framework.

Where they differ

Only the attributes on which Deno Deploy and Flask actually diverge.

Attributes where Deno Deploy and Flask differ
AttributeDeno DeployFlask
Pricing modelUnknownfree
PlatformsCloud/WebLinux, macOS, Windows, Cloud (any platform supporting Python)
Founded20212010

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

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 Deno Deploy

  • Edge Functions
  • Deno KV
  • Automatic HTTPS
  • Global Distribution
  • Zero Config Deploy
  • Git Integration
  • Instant Rollbacks
  • Web Standard APIs

Only in Flask

  • Lightweight framework
  • Jinja2 templating
  • Werkzeug WSGI toolkit
  • URL routing
  • Request handling
  • Session management
  • Cookie handling
  • Blueprint organization

Both cover

  • Cloud deployment

What people use each for

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

Deno Deploy

  • API endpointsnot Flask
  • Edge functionsnot Flask
  • Static sitesnot Flask
  • Real-time appsnot Flask

Flask

  • REST APIs and backend servicesnot Deno Deploy
  • Small-to-medium web applications and prototypesnot Deno Deploy
  • Microservicesnot Deno Deploy
  • Server-rendered apps using Jinja templatingnot Deno Deploy
  • Teaching and learning web developmentnot Deno Deploy

Where each one falls short

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

Deno Deploy

  • Smaller ecosystem compared to AWS Lambda with fewer third-party integrations
  • Less mature than established serverless platforms; newer company and platform
  • 1GB deployment size limit may restrict larger applications
  • 512MB memory limit lower than some competitors for memory-intensive workloads
  • Smaller user base and community compared to Lambda or Netlify

Flask

  • Requires manual configuration of many common features like authentication, ORM, and admin panels
  • No built-in admin interface or scaffolding tools
  • Minimal built-in security features compared to full frameworks

Pricing, plan by plan

Deno Deploy

Free
  • FreeFree
    • 1M requests/month
    • 100GB outbound bandwidth
    • 50ms CPU time per request
  • Pro$20/month
    • Unlimited requests
    • 5GB KV storage
    • Priority support

Flask

Free
  • Open SourceFree
    • Micro web framework
    • Flexible architecture
    • Jinja2 templating

Which should you pick?

Choose Deno Deploy if

  • You need edge functions.
  • You want to start without paying.
  • You work on Cloud/Web.
  • You also want deno kv.
Deno Deploy review

Choose Flask if

  • You need lightweight framework.
  • You want to start without paying.
  • You work on Linux, macOS, Windows, Cloud (any platform supporting Python).
  • You also want jinja2 templating.
Flask review

Questions people ask

Is Deno Deploy or Flask better?
Neither clearly leads. Deno Deploy starts at Free and Flask at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Deno Deploy or Flask?
Deno Deploy starts at Free and Flask at Free.
Does Deno Deploy or Flask run on more platforms?
Deno Deploy runs on Cloud/Web. Flask runs on Linux, macOS, Windows, Cloud (any platform supporting Python).
Can I use Deno Deploy for free?
Both have a free tier, so you can try either at no cost before committing.
What is Deno Deploy best used for?
Deno Deploy is most often used for api endpoints, edge functions, static sites, real-time apps. Of those, api endpoints and edge functions are not what Flask is typically brought in for.
What can Deno Deploy do that Flask cannot?
Deno Deploy covers Edge Functions, Deno KV, Automatic HTTPS, Global Distribution. Flask covers Lightweight framework, Jinja2 templating, Werkzeug WSGI toolkit, URL routing. Both handle Cloud deployment.

Answered from the vendors’ own pages

Deno Deploy: What does Deno Deploy's free tier include?

Deno Deploy free tier includes 1 million requests per month, 100 GB of outbound bandwidth, 50 milliseconds of CPU time per request, 50 custom domains, 1 GiB of KV storage, and up to 5 team members.

Source
Flask: Is Flask free to use?

Yes. Flask is open-source software released under the BSD-3-Clause License, available free for any use including commercial applications.

Source
Deno Deploy: What are Deno Deploy's Pro plan features and pricing?

Deno Deploy Pro costs $20/month and removes request limits, increases KV storage to 5GB, and includes priority support. Additional storage beyond 5GB costs $0.75/GiB.

Source
Flask: What are Flask's core dependencies?

Flask depends on three main libraries: Werkzeug (WSGI toolkit), Jinja (template engine), and Click (CLI toolkit).

Source
Deno Deploy: What are the deployment size and memory limits for Deno Deploy?

The total size of all files within a deployment (source files and static files) should not exceed 1 gigabyte. Applications have a maximum memory allocation of 512MB.

Source
Flask: Does Flask provide built-in database support?

No. Flask is a microframework that does not include built-in database support. Developers must choose and integrate their own database libraries, though Flask-SQLAlchemy is a popular community extension.

Source
Deno Deploy: Does Deno Deploy support TypeScript natively?

Yes. Deno Deploy runs TypeScript natively with zero-configuration TypeScript support. Code can be written in TypeScript or JavaScript and runs on the same V8 engine.

Source
Flask: What platforms does Flask support?

Flask is a microframework for Python that runs on any platform that supports Python, including Linux, macOS, Windows, and cloud platforms.

Source
Deno Deploy: What security features does Deno Deploy provide?

Deno Deploy features an opt-in permission system to mitigate supply chain attacks. Permissions can be explicitly granted for file, network, and environment access, running code securely by default.

Source
Flask: Can Flask scale to large applications?

Yes. While designed to be lightweight and simple, Flask is designed with the ability to scale up to complex applications through blueprints, extensions, and modular architecture.

Source
Flask: Does Flask require a build step to run?

No. Flask does not require a build step. Applications can run directly with the Flask development server using 'flask run' from the command line.

Source
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