Vast.ai

What is Vast.ai?

Vast.ai is a GPU cloud marketplace where you rent compute for AI and machine learning work and pay only for the seconds you use. Prices come from supply and demand across more than 40 data centers, so you see the going rate for each of its 68-plus GPU types, from the RTX 3060 up to the B200. You pick an instance type: On-Demand for production, Interruptible for batch training at 50 percent or more off, or Reserved for 1, 3 or 6 month terms. After signing up and adding credit, you choose a template such as PyTorch, TensorFlow or ComfyUI, filter machines by GPU, RAM, network speed and price, then connect by SSH, Jupyter, CLI or API. Teams use it for model training, fine-tuning, LLM inference, image and video generation and agents, and an enterprise offer adds bulk pricing, single-tenant isolation and SOC2 certification. There is no subscription: you buy credit in advance, with a $5 minimum deposit, and rental rates are posted live on its pricing page.

Use cases

• Rent GPUs for model training
• Run batch training on cheaper interruptible instances
• Host open-source LLMs for inference
• Generate images and video with diffusion models
• Reserve GPUs for long-running workloads
• Deploy AI agents on rented compute
• Start Jupyter or SSH sessions on a GPU

Who it's for

• ML engineers
• AI researchers
• Developers
• Enterprise AI teams

Why use Vast.ai

• Market-set prices mean you can compare real rates across GPU models before you rent.
• Per-second billing avoids paying for rounded-up hours on short experiments.
• Interruptible and reserved options let you trade availability against cost to suit the job.
• Templates and several access methods get a training or inference environment running without much setup.
• No long-term contract is required, so you can change GPU types as the workload changes.

Vast.ai features

• Live GPU marketplace with prices set by supply and demand
• Three instance types: On-Demand, Interruptible and Reserved
• Per-second billing with no minimum hours
• 68-plus GPU types from RTX 3060 to B200
• Search filters for GPU type, count, RAM, CPU, network speed and price
• Pre-built templates for PyTorch, TensorFlow and ComfyUI, plus custom templates
• Access through SSH, Jupyter, CLI or API with root-level control
• Autobilling that tops up credit from a saved card
• Enterprise options: bulk pricing, single-tenant isolation, SOC2 certification

Vast.ai integrations

• Stripe
• BitPay
• Crypto.com
• Jupyter
• PyTorch
• TensorFlow
• ComfyUI

How to get started with Vast.ai

1. Create an account, verify your email and add credit by card, BitPay or Crypto.com.
2. Set up SSH keys or the Jupyter certificate so you can connect to your instance.
3. Choose a template, then use Search to filter machines by GPU, RAM, network speed and price.
4. Click Rent, wait for the instance to start and open it through SSH, Jupyter, CLI or API.
5. Stop or destroy the instance when finished, and watch the balance or enable autobilling.

Vast.ai limitations

• Credit is prepaid; instances stop and can be deleted when the balance reaches zero
• Disk size is fixed when an instance is created and cannot be changed later
• Interruptible instances can be reclaimed, so workloads need checkpoints
• Stopped instances keep accruing storage charges
• Fresh image pulls can take 10 to 60 minutes to start

Vast.ai pricing

Vast.ai has no free plan.

Vast.ai plans

• On-Demand

  Price on vendor site

  per-second billing

  • Guaranteed uptime
  • No interruptions
  • Spin up and down anytime

• Interruptible

  Price on vendor site

  per-second billing

  • 50%+ cheaper
  • Preemptible, may be reclaimed
  • Suited to batch training

• Reserved

  Price on vendor site

  1, 3 or 6 month terms

  • Guaranteed capacity
  • Volume discounts available
  • Suited to steady workloads

• Enterprise

  Custom

  • Bulk pricing
  • Single-tenant isolation
  • SOC2 certified
  • 24/7 enterprise support

Plans as listed on the official pricing page on 24 Oct 2026. Prices can change and may vary by country or exclude tax. Check the official pricing page.

Vast.ai alternatives

The main Vast.ai alternatives listed on Debuly are Runpod, Lambda, CoreWeave, Together AI, Replicate and Modal. The table compares pricing and platforms; order is A–Z.

1. 

   CoreWeave

   AI cloud that rents NVIDIA GPU capacity by the hour, with on-demand, spot and reserved plans for model training and inference.

   Developer platformsCoding
   PaidVisit CoreWeave (official site)
2. 

   Lambda

   GPU cloud for AI with on-demand NVIDIA instances and reserved 1-Click Clusters for training, fine-tuning and inference.

   Developer platformsCoding
   PaidVisit Lambda (official site)
3. 

   Modal

   Serverless cloud platform for running AI inference, training, batch jobs and agent sandboxes, billed per second of compute.

   Developer platformsAutomation and agentsCoding
   FreemiumVisit Modal (official site)
4. 

   Replicate

   Cloud API for running, fine-tuning and deploying open-source and proprietary AI models, billed by compute time or by output.

   Developer platformsImage generationVideo
   PaidVisit Replicate (official site)
5. 

   Runpod

   Pay-per-second GPU cloud for AI: on-demand Pods, Serverless endpoints, multi-node Clusters and ready-made public model APIs.

   Developer platformsCoding
   PaidVisit Runpod (official site)
6. 

   Together AI

   AI cloud for running open-source models through serverless and batch inference, dedicated endpoints, GPU clusters and fine-tuning.

   Developer platformsCoding
   PaidVisit Together AI (official site)

Vast.ai FAQ

Sources & verification

Facts on this page come from the official sources below, each with the date we read it. Written by Debuly; the vendor did not review this page.

Image credits

• Logo: from vast.ai · fetched 24 Oct 2026 · Vendor trademark, used only to identify the product; removed on request
• Cover: none collected yet, so a generated tile is shown.

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