Vast.ai RTX4090 Pricing Options
All available RTX4090 instance types on Vast.ai, sorted by lowest hourly rate.
| Region | Instance | Type | Price/hr | GPUs | vCPUs | RAM |
|---|---|---|---|---|---|---|
| Various | RTX 4090 24GB (marketplace) | Spot | $0.3100/hr Cheapest | 1× GPU | — | — |
| global | vast-rtx4090 | Spot | $0.3511/hr | 1× GPU | — | — |
About Vast.ai RTX4090 Cloud Pricing
Vast.ai is a GPU rental marketplace that connects GPU owners with renters, creating a decentralized compute market. Prices are set by supply and demand, often resulting in the lowest rates available anywhere.
Why Choose Vast.ai for RTX4090
- Lowest GPU prices through marketplace competition
- Bid-based pricing for maximum cost optimization
- Massive GPU variety from consumer to enterprise
- Interruptible instances for batch workloads at deep discounts
Best suited for: Researchers and hobbyists comfortable with marketplace dynamics who want the absolute lowest cost per GPU-hour. Best for interruptible workloads like hyperparameter sweeps.
Pricing Analysis
Vast.ai's cheapest RTX4090 option starts at $0.3100/hr, which is 57% below the market average of $0.7175/hr.
Note: Vast.ai pricing varies by demand — off-peak hours can be 50%+ cheaper. Reliability varies by host, so it's best suited for fault-tolerant workloads.
Top Alternatives to Vast.ai for RTX4090
Side-by-side cost comparison vs the cheapest Vast.ai RTX4090 rate ($0.3100/hr).
| Provider | Price/hr | Type | vs Vast.ai |
|---|---|---|---|
| RunPod | $0.3400/hr | On-Demand | +10% more vs Vast.ai |
| TensorDock | $0.4400/hr | Spot | +42% more vs Vast.ai |
| Jarvis Labs | $0.4900/hr | On-Demand | +58% more vs Vast.ai |
| Northflank | $0.4900/hr | On-Demand | +58% more vs Vast.ai |
| FluidStack | $0.7400/hr | On-Demand | +139% more vs Vast.ai |
Calculate Your Exact RTX4090 Cost
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Frequently Asked Questions
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Is a reserved contract worth it here?
Get the break-even math for Vast.ai RTX4090 — calculated from real 90-day pricing data, not an LLM.