6,622 tools, each one opened, scored and signed by a Toolio reviewer

Vast.ai

Rent GPUs for AI and ML at real-time, transparent prices.

Checked 3 Oct 2026 Reviewed by Alex Listed since October 2024

Screenshot of Vast.ai

At a glance

Starts at from $5 per month Price as published by the vendor, September 2026.
Free tier No
Platforms Web, API
Best for AI developers, ML teams

3.9 out of 5

Scored by Alex after real use

Our verdict

Vast.ai offers flexible GPU rentals with per-second billing. Ideal for scaling training jobs but may be overpriced for static workloads.

✓What it does well

Real-Time PricingPricing is set by supply and demand across multiple data centers.
Programmatic AccessAPI-native provisioning with Python SDK and CLI for easy deployment.
Multiple Instance TypesOffers on-demand, interruptible, and reserved instances to match different needs.

✕Where it falls short

Limited Fixed Term OptionsOnly offers one- or three-month terms for reserved instances; no six-month option available.
Higher Costs for Reserved InstancesReserved instances cost up to 50% more than on-demand and interruptible options.
No Free TierDoes not offer a free tier, requiring at least $5 to start.

Key features

GPU Cloud InstancesOn-demand instances across multiple data centers and GPU types.
Serverless InferenceAuto-scaling endpoints for zero-ops inference deployments.
Clusters for Large-Scale TrainingDedicated clusters with InfiniBand networking for large-scale training jobs.
Earnings CalculatorCalculate potential savings with reserved instances.

Questions about Vast.ai

What is Vast.ai?

Vast.ai rents GPUs for AI and ML work at real-time, transparent prices set by supply and demand across multiple data centers. It offers on-demand, interruptible and reserved instances, serverless inference endpoints that auto-scale, and dedicated clusters with InfiniBand networking for large-scale training jobs.

How much does Vast.ai cost?

Vast.ai has no free tier and starts from $5 per month, with billing by the second. Its listed rates are $0.69 per second for On-Demand, $0.35 per second for Interruptible and $0.69 per second for Reserved (3-month) instances.

Does Vast.ai have an API?

Yes. Vast.ai runs on the web and offers API-native provisioning, with a Python SDK and a CLI for easy deployment. The reviewer lists this programmatic access among its main strengths, and Toolio lists it as best for AI developers and ML teams.

What are the downsides of Vast.ai?

The reviewer notes that Vast.ai offers only one- or three-month terms for reserved instances, with no six-month option, and that it may be overpriced for static workloads. It also has no free tier, so users need at least $5 to start.

How does Toolio score Vast.ai?

Alex scored Vast.ai 3.9 out of 5 on 3 Oct 2026 after real use. The verdict credits its flexible GPU rentals with per-second billing and calls it ideal for scaling training jobs, while warning it may be overpriced for static workloads.

COMPARE