Fly.io review
Updated October 12, 2026 · ForgeCue Editorial Team
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Our verdict
Fly.io provides hardware isolated Linux computers for AI agents plus virtual machines for the apps agents create. For builders working from prototype to production, it keeps sleep, wake, checkpoint and deploy workflows on shared primitives with persistent storage and secure connections.
Key facts
- Best for
- Builders deploy AI agents and hosted apps here
- Hosting types
- Cloud virtual machines (Fly Machines), Managed PostgreSQL (Managed Postgres), Managed Kubernetes (Fly Kubernetes), Block storage volumes (Fly Volumes) (Source, checked September 26, 2026)
- Features
- Free-SSL, Backups (Source, checked September 26, 2026)
- Uptime guarantee
- 99.9% (Source, checked September 26, 2026)
- Data centres
- Amsterdam, Netherlands, Stockholm, Sweden, Paris, France, Dallas, Texas (US), Secaucus, NJ (US), Frankfurt, Germany, Sao Paulo, Brazil, Ashburn, Virginia (US), Johannesburg, South Africa, Los Angeles, California (US), London, United Kingdom, Tokyo, Japan, Chicago, Illinois (US), Singapore, San Jose, California (US), Sydney, Australia, Toronto, Canada (Source, checked September 26, 2026)
- Legal entity
- Fly.io, Inc. (Source, checked September 26, 2026)
- Headquarters
- United States (Source, checked September 26, 2026)
- Support channels
- Email, Help-centre, Community (Source, checked September 26, 2026)
- Audience
- Enterprise
- Pricing model
- Free trial
- Official website
- fly.io
Pros and cons
Pros
- Hardware isolated virtual machines run agent workloads close to users at scale
- Sleep and wake keeps filesystem, services and dependencies ready for return
- Automatic checkpoints roll back quickly before risky changes cause problems
- Each unit includes an HTTPS address so built apps go live without migration
Cons
- Agent centered design offers little for traditional sites needing simple hosting
Who it suits
- Developers prototyping AI tools and evals
- Teams scaling agent built apps to production
- Builders needing isolated disposable execution environments
Who should look elsewhere
- Owners seeking simple shared hosting for blogs
- Beginners wanting drag and drop site builders
Core features
Fly.io centers on two primitives. Sprites give each agent a hardware isolated Linux computer with persistent disk, automatic checkpoints and fast rollback after risky changes. Machines host what agents build, starting quickly, running near users and expanding for large traffic. Every Sprite carries an HTTPS address, so creations go live where they were made. An API gateway links Sprites to outside services through centrally managed connectors with scoped access and single point rotation. Support comes from people who write code and understand the stack.
How Fly.io compares
Frequently asked questions
What does Fly.io provide?+
Fly.io provides computers for AI agents and virtual machines for the software agents create. Sprites handle sandboxes, tools and evaluations, while Machines host finished apps. The same primitives carry work from early prototype to production.
What is a Sprite?+
A Sprite is a hardware isolated Linux computer assigned to an agent. It sleeps when idle and wakes with the filesystem, running services and installed dependencies intact. Automatic checkpoints allow fast rollback after risky changes.
What are Fly Machines?+
Fly Machines are hardware isolated virtual machines that host apps agents build. They start quickly, run near users and expand for large traffic. Built apps stay where they were created and go live through an HTTPS address.
How do Sprites connect to outside services?+
Sprites reach outside services through an API gateway that holds credentials. A connector is configured once for the organization and shared by many Sprites. Access is scoped by name, label or endpoint, and rotation applies everywhere at once.
Who is Fly.io designed for?+
Fly.io suits developers prototyping agents, running evaluations and building tools. It also suits teams that want isolated execution and central credential control. Projects that grow from experiments to production keep the same workflow throughout.
Sources
- fly.io checked September 26, 2026
Backs: Hosting types, Uptime guarantee
“Fly.io is a public cloud that runs code on hardware-isolated Linux virtual machines, close to users, in 18+ regions. It has two compute products and a database”
- fly.io/docs/about/free-trial checked September 26, 2026
Backs: Pricing model
“A free trial on Fly.io includes 2 hours of machine runtime or 7 days of access, whichever comes first.”
- fly.io/docs/about/pricing checked September 26, 2026
Backs: Audience, Features
“You can get access to a support plan by purchasing a Standard ($29/month), Premium ($199/month), or Enterprise (starting at $2500/month) package”
- fly.io/docs/about/support checked September 26, 2026
Backs: Support channels
“All customers have access to our active community forum ... For questions about a specific invoice or account management issues, you can email us at billing@fly.io”
- fly.io/docs/reference/regions checked September 26, 2026
Backs: Data centres
“You can host your apps in any of the following regions.”
- fly.io/legal checked September 26, 2026
Backs: Headquarters, Legal entity
“Fly.io, 2261 Market Street #4990, San Francisco, CA 94114”
Compiled from 6 source pages, checked October 13, 2026. We did not open an account.
Not confirmed yet: Intro price, Renewal price, Money-back period.