RunPod vs Vast.ai Pricing (2026): Which GPU Cloud Is Cheaper?
Two GPU clouds, two billing models, and no single answer. This honest comparison lines up on-demand hourly rates across popular GPUs, explains how each platform bills, and shows which one is cheaper for your workload.
Prices change constantly. The hourly rates below were verified on October 8, 2026 from public pricing pages and third-party trackers (sources listed at the bottom). GPU cloud prices move with supply and demand — always check the providers' live pricing pages before making decisions. OpenTencor AI is an independent educational site; we are not affiliated with RunPod or Vast.ai.
RunPod and Vast.ai are the two names that come up in almost every "where do I rent a GPU cheaply?" conversation. They're popular for opposite reasons: RunPod publishes fixed, predictable per-second pricing with managed infrastructure, while Vast.ai runs a peer-to-peer marketplace where independent hosts set their own prices — usually much lower, but with more variability. Here's an honest breakdown of how each one charges and when each wins.
How RunPod pricing works
RunPod sells Pods — dedicated GPU instances you rent by the second (no one-hour minimums). Its public pricing page lists fixed hourly rates for on-demand Pods. Rates verified October 2026:
- RTX 4090 (24 GB): $0.74/hr
- RTX 3090 (24 GB): $0.50/hr
- L40S (48 GB): $1.09/hr
- A100 SXM (80 GB): $1.59/hr
- H100 SXM (80 GB): $3.49/hr
Beyond on-demand Pods, RunPod offers cheaper Community and Spot tiers (e.g., RTX 4090 Spot from roughly $0.34/hr) with reduced availability guarantees, plus a Serverless product for inference that bills workers by usage (higher per-hour class rates, but you pay only while requests run). Storage is billed separately — network volumes run about $0.07/GB/month.
How Vast.ai pricing works
Vast.ai is a marketplace: individual hosts list their hardware and set prices, so there is no single fixed rate. Listings carry reliability scores, and you can filter for interruptible instances (cheaper, can be preempted by higher-paying renters) or stable on-demand ones. Typical 2026 marketplace ranges from live trackers:
- RTX 4090 (24 GB): roughly $0.29–$0.59/hr (cheapest live listings from ~$0.33/hr)
- A100 80GB: cheapest listings from ~$0.55/hr, typical average around $0.85/hr
- H100 (80 GB): cheapest listings from ~$1.47–$1.73/hr, upper range near $2.27/hr
The bottom of the market moves daily, and the cheapest listings often come from hosts with lower reliability scores. Rule of thumb: the headline "from" price is real, but treat it as the price of a bargain that requires careful host selection.
Side-by-side: hourly rates (October 2026)
| GPU | RunPod (on-demand Pods) | RunPod (Spot/Community) | Vast.ai (marketplace) |
|---|---|---|---|
| RTX 4090 24GB | $0.74/hr | from ~$0.34/hr | ~$0.29–$0.59/hr |
| RTX 3090 24GB | $0.50/hr | lower on Spot tiers | ~$0.12–$0.22/hr |
| A100 80GB | $1.59/hr | from ~$1.19/hr | from ~$0.55/hr (avg ~$0.85/hr) |
| H100 80GB | $3.49/hr | from ~$1.99/hr | from ~$1.47–$1.73/hr |
Illustrative cost example
Say you need a 100-hour fine-tuning run on an A100 80GB:
- RunPod on-demand Pods: 100 × $1.59 = $159 of compute
- Vast.ai at the ~$0.85/hr average: 100 × $0.85 = ~$85 of compute
- Vast.ai at a cheap $0.55/hr listing: 100 × $0.55 = ~$55 of compute
That's the pattern in one glance: Vast.ai is typically 30–50% cheaper on raw compute. The gap shrinks once you add the real-world extras both platforms charge for: storage volumes, idle time, and data transfer.
Which one should you pick?
- Pick RunPod if you want pricing you can quote in a budget meeting: fixed published rates, per-second billing, managed infrastructure, and no host shopping. Best for teams, deadlines, and anyone who values not thinking about ops.
- Pick Vast.ai if you want the lowest possible hourly rate and can handle the marketplace mechanics: comparing host reliability scores, tolerating interruptions on interruptible listings, and managing your own storage cleanup.
- Rule of thumb: use RunPod for production-ish work and anything deadline-driven; use Vast.ai for experiments, long cheap training runs, and learning — with checkpointing, since interruptions happen.
Hidden costs to watch on both
- Idle instances: both bill while the instance is running, even if the GPU is at 0% utilization. Destroy what you're not using.
- Storage: model weights and datasets live on billed volumes on both platforms — persistent storage adds up fast at hundreds of GB.
- Egress: moving large checkpoints back out can carry data transfer fees.
- Spot/interruptible trade-offs: the cheapest listings on both platforms can be reclaimed. If your workload can't tolerate restarts, price the stable tier instead.
Want the math for your own workload? Plug in your GPU, hours, and pricing model in our free GPU cost calculator — it runs in your browser, no sign-up. Rates there are illustrative examples for budgeting, not live quotes.
Sources
- RunPod official pricing page (runpod.io/pricing) — Pods/Serverless rate card, per-second billing
- madebyagents.com GPU rental price tracker — live Vast.ai "from" rates (updated daily)
- aitooldiscovery.com Vast.ai review (Q1 2026 marketplace rate ranges)
- dev.to GPU cloud comparison (October 2026, A100 80GB cross-provider rates)