RunPod vs Vast.ai vs Lambda: which GPU cloud is actually cheapest for AI?

The three big cloud-GPU names price and position themselves very differently. Here's what each actually costs right now (H100 from ~$1.73/hr on…

Aliteq
Tensor · Local AI & Automation Editor

The short answer

For renting AI GPUs, Vast.ai is a marketplace with the lowest spot prices (independent hosts compete), RunPod balances competitive pricing with ease of use and strong serverless/inference options,…

Vast.ai: marketplace, lowest spot prices — cheapest for interruptible work (H100 from ~$1.73/hr, 22 Sep 2026).

RunPod: balanced price + ease, strong serverless/inference — H100 on-demand ~$1.99/hr.

Lambda: training-focused, reserved capacity — published H100 PCIe ~$3.29/hr; sold in bigger commitments.

Cheapest raw price: usually Vast.ai spot; easiest: RunPod; most stable: Lambda.

Prices change hourly — compare live on our cloud-GPU compare page.

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RunPod vs Vast.ai vs Lambda: which GPU cloud is actually cheapest for AI?

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