GPU Cloud Review2026
Vast.ai
Open GPU marketplace — lowest prices via competitive bidding
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7/10Best if you only care about price and can tolerate variable reliability.About Vast.ai
Vast.ai is a peer-to-peer GPU marketplace where anyone with idle NVIDIA GPUs can list them for rent. This creates a competitive spot-like market where prices can be 70–90% cheaper than cloud providers. The tradeoff: hardware quality varies, and there's no SLA. Perfect for cost-sensitive batch workloads, researchers, and anyone comfortable with a marketplace model.
Founded
2018
HQ
San Francisco, CA
Pricing
Marketplace bidding — set your max $/hr bid
Min Commit
Hourly (billed per minute)
GPU Pricing
| GPU | VRAM | Price | Best For |
|---|---|---|---|
| H100 SXM 80GB | 80 GB | from $2.00/GPU/hr | Training (if available) |
| A100 80GB | 80 GB | from $1.20/GPU/hr | Fine-tuning |
| RTX 4090 24GB | 24 GB | from $0.35/GPU/hr | Inference & gen AI |
| RTX 3090 24GB | 24 GB | from $0.15/GPU/hr | Budget research |
| L40S 48GB | 48 GB | from $0.75/GPU/hr | Inference |
| T4 16GB | 16 GB | from $0.10/GPU/hr | Cheapest inference |
Pros
- ✓Cheapest GPU prices available anywhere — T4 from $0.10/hr, RTX 4090 from $0.35/hr
- ✓Transparent bidding system — set your max price and find the best match
- ✓Huge selection of GPUs including consumer and workstation cards
- ✓No minimum commitment — per-minute billing
- ✓Filter by verified host, GPU quality score, and datacenter vs home hardware
- ✓Direct SSH/Jupyter access to containers
Cons
- ✗No SLA — host machines can go offline or be unstable
- ✗Hardware quality varies widely between hosts
- ✗Not suitable for compliance-sensitive or production workloads
- ✗Multi-node training requires careful host selection
- ✗Data privacy concerns with distributed/unknown hosts
Available Regions
Distributed globally — US, Europe, Asia via individual hosts
Vast.ai is Best For
- →Batch training jobs & experiments
- →Budget-sensitive research
- →Teams comfortable with a marketplace tradeoff
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