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FastAPI vs Octopus Deploy

FastAPI logo

FastAPI

Web Development

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

From
Free
Free plan
Yes
Full reviewWebsite
Octopus Deploy logo

Octopus Deploy

Developer Tools

Continuous delivery and runbook automation for releases

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Each has a real cost: FastAPI no built-in ORM, requires separate database libraries; Octopus Deploy free tier caps at 10 projects, 10 tenants, 10 machines, 10 users, 5 concurrent tasks and 1 space
  • Prices and features above were last checked on 29 August 2026.

Where they differ

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

Attributes where FastAPI and Octopus Deploy differ
AttributeFastAPIOctopus Deploy
Pricing modelopen-sourcesubscription
CategoryWeb DevelopmentDeveloper Tools

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

What people use each for

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

FastAPI

  • Building production-ready REST APIs with automatic validationnot Octopus Deploy
  • Serving machine learning model predictions as REST servicesnot Octopus Deploy
  • Building crisis management and orchestration platformsnot Octopus Deploy
  • Enabling real-time APIs with WebSocket connectionsnot Octopus Deploy
  • Rapid API development reducing boilerplate code significantlynot Octopus Deploy

Octopus Deploy

  • Automating software deployments across development, testing, productionnot FastAPI
  • Automating emergency tasks like website failover and incident responsenot FastAPI
  • Managing multi-tenant deployments without duplicating configurationnot FastAPI
  • Tracking DORA metrics and enforcing deployment approval gatesnot FastAPI

Where each one falls short

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

FastAPI

  • No built-in ORM, requires separate database libraries
  • Python-only, cannot build with other languages
  • Async/await learning curve for developers new to async programming
  • Production deployment requires separate ASGI server configuration

Octopus Deploy

  • Free tier caps at 10 projects, 10 tenants, 10 machines, 10 users, 5 concurrent tasks and 1 space
  • Annual billing is the only option for both Octopus Cloud and Octopus Server; there is no monthly plan
  • Professional cloud tier is $4,330 per year and Enterprise cloud is $24,600 per year, with tenants and machines sold as add-ons beyond the free allotment

Pricing, plan by plan

FastAPI

Free

No published plan breakdown. See the FastAPI review.

Octopus Deploy

Free
  • FreeFree
    • 10 projects
    • 10 tenants
    • 10 machines
  • Professional (Cloud)$4330/year
    • Up to 100 projects
    • Unlimited spaces and users
    • Tenants and machines available as add-ons
  • Professional (Server)$2080/year
    • Up to 100 projects
    • Unlimited spaces and users
    • Tenants and machines available as add-ons
  • Enterprise (Cloud)$24600/year
    • 100+ projects supported
    • Unlimited spaces and users
    • 20 concurrent tasks

Which should you pick?

Choose FastAPI if

  • You want to start without paying.
FastAPI review

Choose Octopus Deploy if

  • You want to start without paying.
Octopus Deploy review

Questions people ask

Is FastAPI or Octopus Deploy better?
Neither clearly leads. FastAPI starts at Free and Octopus Deploy at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, FastAPI or Octopus Deploy?
FastAPI starts at Free and Octopus Deploy at Free.
Does FastAPI or Octopus Deploy run on more platforms?
Both run on Web, so platform support will not decide this one for you.
Can I use FastAPI for free?
Both have a free tier, so you can try either at no cost before committing.
What is FastAPI best used for?
FastAPI is most often used for building production-ready rest apis with automatic validation, serving machine learning model predictions as rest services, building crisis management and orchestration platforms, enabling real-time apis with websocket connections. Of those, building production-ready rest apis with automatic validation and serving machine learning model predictions as rest services are not what Octopus Deploy is typically brought in for.

Answered from the vendors’ own pages

FastAPI: Is FastAPI free to use?

Yes. FastAPI is free and open-source under the MIT License. It costs nothing to download, use, or deploy in production. An optional paid service, FastAPI Cloud, offers one-command deployment for additional convenience, but the core framework is free.

Source
Octopus Deploy: How much does Octopus Deploy cost?

Octopus Deploy offers a free tier at $0/year with limits on projects (10), users (10), and tenants (10). Professional plans start at $2,080/year for self-hosted or $4,330/year for cloud hosting.

Source
FastAPI: Can I use FastAPI for commercial applications?

Yes. FastAPI's MIT License permits unrestricted commercial use, modification, and distribution. You can build and sell products powered by FastAPI without licensing fees or restrictions.

Source
Octopus Deploy: What does the free Octopus Deploy tier include?

The free tier includes 10 projects, 10 tenants, 10 machines, 10 users, 5 concurrent tasks, 1TB file storage, 100GB database storage, and community support only.

Source
FastAPI: Does FastAPI include a database or ORM?

No. FastAPI does not include a built-in database or ORM. You must add separate libraries like SQLAlchemy for database access. This gives flexibility to choose the database solution best suited to your project.

Source
Octopus Deploy: Can I try Octopus Deploy for free before purchasing?

Yes, a free tier is available with unlimited duration but capped usage, plus a 30-day free trial with full Enterprise features is offered to evaluate the platform.

Source
FastAPI: What Python versions does FastAPI support?

FastAPI supports Python 3.7 and later. Older Python versions are not compatible, so you must run at least Python 3.7 to use FastAPI.

Source
Octopus Deploy: What are the Enterprise pricing differences between Cloud and Server hosting?

Enterprise Cloud hosting costs $24,600/year and includes 20 concurrent tasks and 24/7 support. Enterprise Server self-hosted costs $15,600/year with flexible concurrent task configuration and 24/7 support.

Source
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