Fly.io

What Fly.io does

Fly.io is an edge-first cloud infrastructure platform that enables developers to deploy and run applications close to end users across 18+ global regions. The company's core technology is Fly Machines, a compute primitive built on KVM-isolated virtual machines (Firecracker) running on Fly.io's own bare-metal infrastructure with a memory-safe Rust and Go stack. The platform is accessed primarily through a command-line tool (flyctl) and a programmatic Machines API, and supports popular frameworks including Rails, Phoenix, Django, Laravel, NextJS, and .NET without requiring a Dockerfile for most use cases.

The product portfolio extends beyond compute into managed databases (Managed Postgres), object storage (Tigris), persistent local NVMe storage (Fly Volumes), GPU instances for AI workloads (A10, L40S, A100), Kubernetes (Fly Kubernetes), and most notably Sprites — hardware-isolated sandboxes purpose-built for executing AI-generated or untrusted code with sub-second startup and per-second billing. Supporting platform features include WireGuard-based private networking, autoscaling, zero-downtime deploys, and granular routing via the Fly Proxy.

Fly.io monetizes through a hybrid model: usage-based billing for compute, storage, and bandwidth, layered with three subscription support tiers — Standard ($29/month), Premium ($199/month), and Enterprise ($2,500+/month) — the last of which includes 24x7 response, dedicated Slack, and direct CEO access. Go-to-market is product-led via flyctl CLI with a free signup and self-serve deployment, complemented by an active community forum, framework-specific technical content, and an inside/field sales motion for premium and enterprise tiers. The customer base skews toward developer startups, particularly AI-native companies (Builder.io, Mercor, Imbue, Beam, Reflex, Mocha, Supabase), with limited but growing enterprise presence (Fanatics). The company has raised approximately $107M in venture funding across a seed, Series A, Series B, and Series C, most recently a $70M Series C in June 2023 led by EQT Ventures at a $467M valuation.

Name

Fly.io

Legal name

Fly.io

Website

https://fly.io

Company type

Private

Founded year

2021

Operating status

Operating

Headcount range

51–100 employees

Short description

Fly.io is an edge-first cloud infrastructure platform offering hardware-isolated VMs, GPU compute, and AI-code sandboxes across 18+ global regions, serving primarily developers and AI-native startups via a CLI-led, usage-based pricing model with subscription support tiers.

Ownership category

akta.pro rank

Product category

Cloud Infrastructure

NAICS

Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services (5182)

akta.pro primary industry

Cloud-Native Development (Containers, Kubernetes, Microservices) (BPAEACAD)

Keywords

• Edge cloud platform
• Compute infrastructure
• Container hosting service
• Managed postgres service
• Code sandbox execution

Headquarters

HQ city

Chicago

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Software

Cost components

Infrastructure, Technology or R&D, Personnel, Operations, Marketing or Sales

Revenue model

1. Compute Usage: Pay-as-you-go compute pricing for Fly Machines. Machines run only when needed with per-second billing for actual CPU and memory consumption. Shared vCPUs with burst capacity or performance vCPUs available.
2. Support Plans: Three-tiered support subscription model: Standard ($29/mo), Premium ($199/mo), and Enterprise ($2,500+/mo). Enterprise includes 24x7 support with guaranteed response times.
3. Managed Database Services: Managed Postgres service with automated provisioning, HA, backups, and monitoring. Additional storage and configuration options.
4. Storage Services: Tigris object storage for global, durable storage alongside fast local NVMe volumes for persistent machine storage.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels6 records

Core offering

Fly.io is an edge-first cloud platform that lets developers deploy full-stack applications to 18+ global regions using Fly Machines — hardware-virtualized containers (Firecracker/KVM) running on Fly.io's own bare metal. The core service bundles compute (per-second billing), persistent storage, managed PostgreSQL, GPU instances, private WireGuard networking, and AI code sandboxes (Sprites) behind a single flyctl CLI and Machines API, marketed as a Heroku-style experience without Dockerfile or DevOps overhead.

Product overview

Fly.io is an edge-first cloud platform providing a unified platform for deploying and running applications globally. The core offering is Fly Machines, hardware-virtualized containers that power all workloads, supplemented by Sprites for sandboxed code execution. Supporting services include Managed Postgres (MPG) for database needs, Fly GPUs for AI workloads, Tigris object storage, and Fly Volumes for persistent NVMe storage. Additional platform features include Fly Kubernetes (FKS), Private Networking with WireGuard, Autoscaling, Zero Downtime Deploys, Granular Routing, and comprehensive monitoring. The platform operates across 18 global regions with sub-100ms latency, and is accessed via flyctl CLI or Machines API. Fly.io positions itself as a Heroku alternative focused on reducing deployment complexity while providing enterprise-grade infrastructure.

Differentiator

Problem solved

Functional benefit

Brands

• Fly Machines: Hardware-virtualized containers that launch instantly and run only when needed, enabling developers to deploy apps close to end users with sub-100ms response times.
• Sprites
• Managed Postgres

Products and services

• Fly Machines Fly Machines are hardware-virtualized containers (KVM-based VMs) built on Firecracker that launch instantly, run only when needed (auto-stop/autostart), and scale to tens of thousands of instances globally. They form the core compute substrate for all Fly.io workloads and are sold on a pay-as-you-go basis with per-second billing for CPU and memory consumption.
• Sprites Sprites are hardware-isolated sandboxes for running untrusted or AI-generated code in complete safety. Each Sprite is a self-contained environment that launches in under one second with checkpoint and restore capabilities, dedicated CPU/memory/networking, and a private filesystem. Designed for AI agent infrastructure and per-user sandbox execution.
• Managed Postgres (MPG) Fully managed PostgreSQL database service with automated provisioning, high availability, automatic failover, encrypted backups, monitoring, and 24/7 support. Handles provisioning, scaling, and database management for Fly.io customers, with built-in support for read replicas across Fly.io's global regions.
• Fly GPUs GPU-accelerated Fly Machine instances supporting NVIDIA A10, L40S, A100 40G PCIe, and A100 80G SXM GPUs. Available in ord, iad, sjc, syd, and ams regions for AI inference, model fine-tuning, and graphics/video processing workloads including Llama 3 8B and Stable Diffusion.
• Tigris Object Storage Global, durable, S3-compatible object storage integrated with the Fly.io platform. Provisioned and managed via flyctl CLI commands for storing application data, media assets, and backups, with global distribution aligned to Fly.io's 18+ regions.
• Fly Kubernetes (FKS) Managed Kubernetes service running on Fly.io's infrastructure. Combines managed Kubernetes clusters with Fly.io's edge network and integrates with Fly GPUs and Fly Volumes, allowing developers to run standard Kubernetes workloads on Fly's global footprint.
• Phoenix.new Phoenix.new is a Fly.io-hosted environment providing first-class support for the Elixir Phoenix framework, with dedicated tooling and documentation for building, deploying, and running Phoenix applications on Fly.io's edge platform.

Quantifiable outcome

• Sub-100ms response times for globally deployed applications
• +2 more outcomes

Named customers15 records

Segments4 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration18 records

AI capability3 records

Feature12 records

Partnerships

Two partnerships are on record, tiered core and major.

• TigriscoreTechnology or IntegrationTigris is Fly.io's built-in object storage solution. S3-compatible global storage integrated with flyctl and platform APIs.
• Y CombinatormajorGTM or Marketing PartnerY Combinator portfolio company. Fly.io contributes compute credits ($3,000-$50,000) to YC Summer Fellows Grants program for undergraduate CS students working on technical projects.

Scale indicators5 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Railway: Application platform offering one-click deployment of services and databases with usage-based pricing and global regions. Directly comparable to Fly.io as a developer-centric PaaS alternative to Heroku with a similar target audience of indie developers and small teams.
• Render: Unified cloud platform for hosting web services, APIs, databases, and cron jobs with automatic deploys from Git. Comparable to Fly.io in serving developers seeking simple global deployment without managing underlying infrastructure.
• Vercel: Frontend cloud platform focused on global edge deployment of web frameworks (Next.js, etc.) with instant rollbacks and zero-config deploys. Overlaps with Fly.io on edge deployment for modern web apps, though Vercel is more frontend-specialized.

Emerging players

• Akash Network: Decentralized cloud computing marketplace using Kubernetes for compute leasing. Emerging alternative to Fly.io's edge compute positioning, particularly for cost-sensitive AI workloads, though with very different infrastructure economics.
• Northflank: Developer-focused platform for deploying services, jobs, and databases with Kubernetes under the hood. Comparable to Fly.io on the multi-region deployment and developer-experience axis, with growing overlap in AI workload hosting.
• Supabase: Open-source Firebase alternative that has expanded into edge functions and is itself a Fly.io customer. Adjacent platform overlap on developer data and compute services, with edge function capabilities competing for some of the same workloads.

Broad incumbents

• DigitalOcean: Cloud infrastructure provider targeting developers and SMBs with simple VMs, managed databases, and App Platform. Overlaps with Fly.io on serving the developer/SMB segment, though with more traditional data-center architecture rather than edge-first.
• Heroku: Pioneer developer PaaS (now Salesforce-owned) for deploying, managing, and scaling applications. Fly.io explicitly positions itself as a Heroku alternative, targeting the same developer persona seeking push-to-deploy simplicity.
• Cloudflare Workers: Cloudflare's edge compute platform running V8 isolates across 300+ cities with global low-latency execution. Overlaps with Fly.io's edge positioning and AI sandbox use case (Cloudflare Workers AI), backed by Cloudflare's network and security portfolio.

Regional players

• Hetzner: European cloud provider offering competitively priced dedicated servers, cloud VMs, and managed services. Comparable infrastructure economics (proprietary bare metal, developer-friendly pricing) but primarily focused on European markets with a different regional distribution than Fly.io.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/flydotio
• GitHubgithub.com/superfly
• LinkedInlinkedin.com/company/fly-io

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds7 records

Investors14 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Fly.io