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Deno Deploy vs FastAPI

Deno Deploy logo

Deno Deploy

Software

Serverless JavaScript at the edge

From
Free
Rated
-
Full reviewWebsite
F

FastAPI

Software

A modern, fast, high-performance web framework for building APIs with Python

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; FastAPI licensed under the MIT License per fastapi.tiangolo.com; as open source software it has no paid tier or vendor price to compare

Where they differ

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

Attributes where Deno Deploy and FastAPI differ
AttributeDeno DeployFastAPI
Pricing modelUnknownopen-source
PlatformsCloud/WebWeb
Founded2021Unknown

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 FastAPI

Nothing recorded that Deno Deploy does not also cover.

What people use each for

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

Deno Deploy

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

FastAPI

No use cases recorded yet. See the FastAPI review.

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

FastAPI

  • Licensed under the MIT License per fastapi.tiangolo.com; as open source software it has no paid tier or vendor price to compare
  • FastAPI depends entirely on Starlette for its web layer and Pydantic for validation, per its own documentation, so it is not a standalone framework and inherits both dependencies' constraints

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

FastAPI

Free

No published plan breakdown. See the FastAPI review.

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 FastAPI if

  • You want to start without paying.
FastAPI review

Questions people ask

Is Deno Deploy or FastAPI better?
Neither clearly leads. Deno Deploy starts at Free and FastAPI at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Deno Deploy or FastAPI?
Deno Deploy starts at Free and FastAPI at Free.
Does Deno Deploy or FastAPI run on more platforms?
Deno Deploy runs on Cloud/Web. FastAPI runs on Web.
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 FastAPI is typically brought in for.
What can Deno Deploy do that FastAPI cannot?
Deno Deploy covers Edge Functions, Deno KV, Automatic HTTPS, Global Distribution.

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
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
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
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
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
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