Vast.ai operates a global marketplace for GPU compute, letting developers and AI agents procure and optimize compute resources on demand. It offers on-demand GPU instances, serverless inference, and dedicated multi-node GPU clusters.

How does the GPU marketplace model work?

Vast.ai aggregates GPU supply into a marketplace with real-time pricing, so users can choose instances that fit their performance and budget needs. The platform emphasizes API-native provisioning and per-second billing.

What does 'agent-ready' GPU infrastructure mean?

Vast.ai is designed so that AI agents and developers can autonomously design, procure, and optimize their compute through APIs. This lets automated systems select and provision GPU resources without manual intervention.

What workloads can run on Vast.ai?

The platform supports a variety of AI workloads including training, inference, fine-tuning, and rendering. Its mix of on-demand instances, serverless inference, and dedicated clusters covers both lightweight and heavy compute tasks.

How is billing handled on Vast.ai?

Vast.ai offers per-second billing along with real-time pricing across its marketplace. This granularity lets users pay closely in line with actual usage rather than larger fixed blocks of time.

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Vast.ai

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Agent-ready GPU infrastructure for AI, offering API-native provisioning, real-time pricing, and per-second billing.

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from $5/mo

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About Vast.ai

What Vast.ai does

Vast.ai is an agent-ready GPU infrastructure marketplace that provides on-demand access to GPUs across a distributed network of data centers. It offers API-native provisioning, real-time pricing, and per-second billing, serving as flexible compute infrastructure for AI training, inference, and fine-tuning workloads.

Key capabilities

The platform offers on-demand GPU cloud instances across many data centers, deployable in seconds, plus serverless model deployment with autoscaling and multi-node clusters with InfiniBand networking for large-scale training. Dynamic, supply-and-demand-based pricing is queryable via API, and users pay only for the compute time they use. Provisioning is available through a REST API, Python SDK, and CLI, making it suitable for automated and agent-driven workflows.

Who it's for

Vast.ai targets AI development teams, ML engineers, and organizations that need flexible GPU capacity without long-term contracts, as well as AI agent systems that autonomously procure compute. Its low entry point and per-second billing suit teams scaling workloads up and down on demand.

Key capabilities

Real-time GPU marketplace

API-native provisioning

Per-second billing

Support for 20,000+ GPUs across 40+ data centers

GPU Cloud for on-demand instances

Serverless for zero-ops inference

Dedicated Clusters for large-scale training

Pre-configured model templates (e.g., Kimi, Gemma, Qwen)

Technology stack

3detected May 30, 2026

Est. monthly stack spend ~$150/mo

Analytics

Google Tag Manager

Framework

Next.jswebpack

Infra

Vercel

Agent readiness

70/100

Agent-ready

MCP server

Public API

Webhooks

OAuth 2.0

SDKs · Python

API docs ↗

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Frequently asked

What is Vast.ai?: Vast.ai operates a global marketplace for GPU compute, letting developers and AI agents procure and optimize compute resources on demand. It offers on-demand GPU instances, serverless inference, and dedicated multi-node GPU clusters.
How does the GPU marketplace model work?: Vast.ai aggregates GPU supply into a marketplace with real-time pricing, so users can choose instances that fit their performance and budget needs. The platform emphasizes API-native provisioning and per-second billing.
What does 'agent-ready' GPU infrastructure mean?: Vast.ai is designed so that AI agents and developers can autonomously design, procure, and optimize their compute through APIs. This lets automated systems select and provision GPU resources without manual intervention.
What workloads can run on Vast.ai?: The platform supports a variety of AI workloads including training, inference, fine-tuning, and rendering. Its mix of on-demand instances, serverless inference, and dedicated clusters covers both lightweight and heavy compute tasks.
How is billing handled on Vast.ai?: Vast.ai offers per-second billing along with real-time pricing across its marketplace. This granularity lets users pay closely in line with actual usage rather than larger fixed blocks of time.

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About Vast.ai

What Vast.ai does

Key capabilities

Who it's for

Key capabilities

Technology stack

Agent readiness

Alternatives

OpenAI

Databricks

xAI

Mistral AI

Figure AI

Thinking Machines Lab

Frequently asked

Explore more around Vast.ai

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