Per-hour billing

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Pay by the hour and stop anytime.
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Interruptible instances for less

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Cheaper instances for fault tolerant jobs.
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Marketplace GPU pricing

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Compare hosts for low cost GPU rentals.
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Saving on Vast.ai

Because it is a marketplace, prices vary a lot between hosts, so the saving comes from shopping around and picking the right balance of price and reliability.

How to keep it cheap

  1. Compare offers and sort by price for your GPU type.
  2. Use interruptible instances for fault tolerant jobs.
  3. Stop instances the moment a run finishes.

Worth knowing

Interruptible instances are cheaper but can be reclaimed, so use them for work that can restart. For pure cost per GPU hour, this is often the cheapest route if you do not mind managing the choice.