FluidStack vs Fly.io Comparison
Detailed comparison of features, pricing, and capabilities
Last updated May 1, 2026
Overview
Compare key metrics and features at a glance
FluidStack
https://www.fluidstack.io
FluidStack is a cloud GPU infrastructure provider that aggregates underutilized GPU capacity from data centers worldwide to offer on-demand and reserved GPU compute at competitive prices. The platform enables AI companies, researchers, and developers to access large-scale GPU clusters for training and inference workloads, including support for high-performance interconnects like InfiniBand. FluidStack differentiates itself by sourcing capacity from a distributed network of partner data centers, providing cost-effective alternatives to hyperscale cloud providers for AI/ML workloads.
Fly.io
https://fly.io
Fly.io is a platform that allows developers to deploy applications closer to their users by running them in micro-VMs on a global network of servers. It transforms Docker containers into micro-VMs that can run anywhere in the world, providing better performance through edge computing and simplified deployment processes. The platform specializes in running full-stack applications globally with minimal latency.
Quick Comparison
| Detail | FluidStack | Fly.io |
|---|---|---|
| Category | AI Cloud Infrastructure | Platform as a Service (PaaS) |
| Starting Price | Contact Sales | Free |
| Plans Available | 1 | 5 |
| Features Tracked | 16 | 16 |
| Founded | 2019 | 2017 |
| Headquarters | London, United Kingdom | San Francisco, USA |
Features
Detailed feature-by-feature comparison
Feature Comparison
| Feature | | |
|---|---|---|
| api | ||
| Fly Machines API | ||
| core | ||
| Auto-Scaling | ||
| Dedicated GPU Clusters | ||
| Docker Container Deployment | ||
| Firecracker MicroVMs | ||
| Fly Launch | ||
| Fully Managed Clusters | ||
| Global Anycast Networking | ||
| H100/H200/B200/GB200 Support | ||
| InfiniBand Interconnects | ||
| Kubernetes Support | ||
| Low-Latency Inference | ||
| Managed Postgres | ||
| Managed Redis | ||
| Multi-Region Deployment | ||
| Multiple Language Support | ||
| Persistent Volumes | ||
| Private Network | ||
| Rapid Deployment | ||
| Slurm Support | ||
| Transparent Pricing | ||
| custom | ||
| Custom Data Centers | ||
| integration | ||
| CI/CD Integration | ||
| Distributed Data Access | ||
| security | ||
| Secrets Management | ||
| Secure Access Controls | ||
| Single-Tenant Isolation | ||
| support | ||
| 15-Minute Response SLA | ||
| 99% Uptime SLA | ||
| Proactive Monitoring | ||
| Prometheus Metrics | ||
| flyctl CLI | ||
Pricing
Compare pricing plans and value for money
FluidStack
Contact Sales
Best For
AI companies and researchers needing rapid, cost-effective, fully managed large-scale dedicated GPU clusters for training without hyperscaler lock-in.
Fly.io
From $0/mo
Price Components
- Compute (shared-cpu-1x 256MB): $0.0028/hour
- Persistent Volumes: $0.15/GB
- Volume Snapshots: $0.08/GB (10 included)
- Data Egress (NA/Europe): $0.02/GB
- Dedicated IPv4: $2/address
Best For
Developers and startups building latency-sensitive, full-stack or stateful apps like global APIs and databases that need edge deployment without vendor lock-in.
Integrations
See which third-party services are supported
Supported Integrations
Coming Soon
Integration comparison data for FluidStack, Fly.io is being collected and will be available soon.
Strengths & Limitations
Key strengths and limitations of each service
FluidStack
AI companies and researchers needing rapid, cost-effective, fully managed large-scale dedicated GPU clusters for training without hyperscaler lock-in.
- Rapid deployment of multi-thousand GPU clusters in as little as 48 hours with zero-setup management.
- Single-tenant isolation at hardware, network, and storage levels eliminates noisy neighbors unlike hyperscalers.
- Supports latest NVIDIA H100/H200/B200/GB200 GPUs with InfiniBand and 99% uptime SLA.
- 24/7 engineering support via Slack with 15-minute response times and proactive monitoring.
- Enterprise-only pricing requires contacting sales, lacking transparent pay-as-you-go rates.
- Small team of 11-50 employees and seed funding may limit scalability versus larger competitors.
- Aggregated capacity from partner data centers could introduce variability in global availability.
Fly.io
Developers and startups building latency-sensitive, full-stack or stateful apps like global APIs and databases that need edge deployment without vendor lock-in.
- Deploys Docker containers as micro-VMs across global edge locations with Anycast networking for sub-100ms latency, outperforming centralized PaaS like Heroku.
- Supports stateful apps via Fly Volumes for persistent NVMe storage and managed Postgres with automated scaling, unlike ephemeral serverless competitors.
- Generous free Hobby tier covers compute, storage, and Anycast IPs with pure pay-as-you-go pricing, avoiding minimum fees of Render or DigitalOcean.
- 7th most popular deployment platform with 2.5% market share and 3M+ apps launched, backed by Series C funding and $11.2M 2024 revenue.
- Managed Postgres requires more hands-on management than fully managed DBaaS from AWS or DigitalOcean, lacking complete 'hands-off' automation.
- Enterprise support starts at $2500/month, pricier than Render's $29/user organization plans for similar scale.
- Smaller team of 51-200 employees may limit rapid feature development versus hyperscalers like AWS.
Company Info
Company details and background
FluidStack
Fly.io
Comparison FAQ
Common questions about comparing FluidStack and Fly.io
No FAQs available yet