Vast.ai vs AWS EC2
A detailed comparison to help you choose between Vast.ai and AWS EC2.
Quick Verdict
3.7/5
Vast.ai
0 reviews
3.9/5
AWS EC2
0 reviews
AWS EC2 is rated higher (3.9 vs 3.7). P2P GPU marketplace connecting researchers and developers with spare compute capacity. Offers rented GPUs at lower rates than centralized cloud providers, ideal for ML training, rendering, and batch processing. 124 Availability Zones in 39 geographic regions
Vast.ai Rent GPUs from individuals for 2-10x cheaper compute |  AWS EC2 The original cloud — 750+ instance types | |
|---|---|---|
| Overview | ||
| Rating | 3.7 (0 reviews) | 3.9 (0 reviews)✓ |
| Pricing model | usage-based | usage-based (per-second On-Demand, Spot, Savings Plans; free tier credits for new accounts) |
| Starting price | From $0.03/mo | From $0.0042/mo✓ |
| Best for | ML researchers, rendering studios, and budget-conscious teams running checkpointable training, fine-tune, and batch workloads who are willing to vet hosts themselves | Teams with AWS expertise needing the broadest instance selection, global regions, GPU/bare metal options, and commitment-based discounts for steady production workloads |
| Specifications (entry plan) | ||
| CPU cores | — | — |
| RAM | — | 0.5 GB |
| Storage | — | — |
| Bandwidth | — | — |
| SLA uptime | — | 99.99% |
| Data-center count | — | — |
| €/GB RAM/mo | — | €0.01 |
| Features | ||
| IPv6 | ✓ | |
| DDoS protection | ✓ | |
| Automated backups | ||
| Snapshots | ||
| Managed option | ||
| Bare metal | ||
| GPU available | ||
| S3-compatible | ||
| Hourly billing | ||
| Free tier | ✓ | |
| Data-center locations | ||
| Regions | Global — distributed hosts | 39 AWS regions / 124 AZs plus Local Zones and Wavelength |
| Tags | ||
| Tags | hourly billinggpu availableeu datacenterus datacenterapac datacenter | free tierhourly billingipv6ddos protectionbackups includedmanaged optionbare metalgpu availables3 compatibleeu datacenterus datacenterapac datacenterapi accessterraform providerkubernetes support |
| Visit Vast.ai → | Visit AWS EC2 → | |
Vast.ai
Pros
- + Cheapest public GPU-hour rates anywhere; per-second billing with no minimum charge
- + Always-on capacity across 81 GPU types and hosts in 52 countries — no 'capacity coming soon'
- + Interruptible bidding and reserved discounts give real pricing levers per workload
- + Dense, useful search filters: reliability score, DLPerf, network speed, host tier
- + SOC 2 Type II and HIPAA attestations at the platform level, per third-party comparisons
Cons
- - No SLA, no owned datacenters, and no recourse when an independent host disappears
- - Host variance is real: measured ±11.7% throughput spread on identical H100 SXM specs
- - Storage bills continue on stopped instances; bandwidth is host-set and can be expensive
- - Interruptible preemption risk demands checkpointing discipline
- - Verification and reliability-score formulas are only partially disclosed
AWS EC2
Pros
- + Widest hardware catalog in the market — 1,000+ instance types including Arm, bare metal and GPU families
- + Per-second billing with real cost levers: Spot up to 90% off, Savings Plans up to 72% off
- + 99.99% region-level SLA across 124 AZs in 39 regions with explicit service credits
- + Mature ecosystem: AMIs, Marketplace, Terraform, Systems Manager, and deep service integration
Cons
- - Total cost is a system of meters — EBS, snapshots, elastic IPv4, data transfer and add-ons dwarf the instance price
- - Requires real AWS expertise: VPC design, security groups, IAM and patching are all self-managed
- - Single-instance SLA is only 99.5%; the 99.99% commitment requires multi-AZ architecture
- - Data transfer out is expensive enough to shape architecture decisions
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