What's good about...
FlexStack
- One-click deploy to AWS without complicated infrastructure or templates
- Easy-to-use dashboard and excellent documentation
- No vendor lock-in - uses your own AWS account and can "eject" anytime
- Generous free tier with affordable monthly plans
Hot Aisle
- Simple, competitive pricing at $2.99/GPU/h
- Self-serve platform with bare metal access
- SOC2 Type 2 and HIPAA compliant
- Hosted in a Tier 5 facility 100% powered by renewable energy
Price comparison
FlexStack Pricing
FlexStack charges a fixed subscription fee on top of your AWS usage. It's available in three plans including a free tier:
- Starter $0/mo: Includes 1 environment, 1 team member and 2 running services.
- Indie $9/mo: Includes 10 environments, 1 team member and 50 running services.
- Team $29/user/mo: Unlimited environments, team members and services.
You can view the complete list of features on their pricing page.
Hot Aisle Pricing
Hot Aisle offers three tiers: Small (1x MI300X), Medium (2-4x MI300X), and Large (8x MI300X bare metal). VMs are priced at $2.99/GPU/hr, billed by the minute. The 8x bare metal tier is $3.39/GPU/hr with a one-month minimum commitment.
CPU cores scale with GPU count:
- Small (1x): 8 or 13 cores
- Medium (2x): 26 cores
- Medium (4x): 52 cores
- Large (8x): 64 or 102 cores
The full specs are available here.
GPU Fleet Overview
Billing Options
FlexStack
Hot Aisle
MI300XHeads up: A provider's own page may quote a different figure, for example on tax, region or a promotion. A monthly-only plan shows a derived hourly rate. Plan figures take each provider's closest match to a common setup. Verify before provisioning. More on how we price.
Which services do they offer
Here are some managed services that FlexStack and Hot Aisle offer:
| Service |
FlexStack
|
Hot Aisle
|
|---|---|---|
| GPU-powered Servers |
Company details
|
FlexStack
|
Hot Aisle
|
|
|---|---|---|
| Website | flexstack.com | hotaisle.xyz |
| Headquarters |
United States of America 
|
United States of America
|
| Founded | 2024 | 2023 |
| Data Center Locations | -- | 1 |
| Example Customers | -- | -- |
FlexStack
Hot Aisle
FlexStack
Hot Aisle
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Hot Aisle
FlexStack
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FlexStack
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Alternatives to consider
Compare FlexStack and Hot Aisle against other cloud providers.
Our data for FlexStack was last updated on Feb. 12, 2026, and for Hot Aisle on Sept. 11, 2026.