About vast.ai
vast.ai is a GPU cloud marketplace that connects renters with providers worldwide. Get access to H100s, A100s, RTX 4090s, 5090s, and more at a fraction of what AWS, GCP, or Azure charge. Ideal for AI model training, running local LLMs, Stable Diffusion, batch inference, and any GPU-heavy workload that would break the budget on a major cloud provider.
Key Features
- GPU Marketplace — rent H100, A100, RTX 4090, 5090 and hundreds of other GPUs from providers worldwide
- 10–20x cheaper than AWS or GCP GPU instances — pay only for what you use
- On-demand and interruptible instance types to match your budget and workload
- Docker-based environments — bring your own image or start from popular ML templates
- SSH access and Jupyter notebooks included out of the box
- Global provider network — filter by location, CUDA version, GPU RAM, and price
Pricing Structure
- Interruptible — From $0.03/hr — Cheapest option — great for fault-tolerant training jobs that can checkpoint and resume
- On-demand — From $0.10/hr — Reserved access — ideal for inference endpoints and interactive workloads
- Pay-as-you-go — Varies by GPU — No subscription required — rent by the hour across hundreds of GPU configurations
Why People Use It
vast.ai is the go-to GPU marketplace for AI builders who need serious compute without enterprise pricing. Whether you are fine-tuning a model, running batch inference, hosting a Stable Diffusion endpoint, or spinning up a local LLM server, vast.ai gives you access to a global pool of GPUs at dramatically lower prices than the major clouds. The platform is flexible, transparent on pricing, and simple enough to spin up in minutes.