the cheapest way to rent a GPU for AI in 2026 costs less than a coffee an hour — here's the live math

You don't need to buy a $2,000 graphics card to run big AI models. Renting one by the hour starts around $0.12/hr (RTX 3090, Vast spot, 22 Sep… Aliteq Voltage · Hardware Editor

Renting a cloud GPU for AI in 2026 is inexpensive. As of 22 September 2026, on the spot market an RTX 3090 (24GB) starts around $0.12/hour, an RTX 4090 around $0.14/hour, an RTX 5090 around…

RTX 3090 (24GB): from ~$0.12/hour spot — the cheapest capable AI GPU to rent.

RTX 4090: from ~$0.14/hour · RTX 5090: from ~$0.40/hour (Vast spot, 22 Sep 2026).

A100 (80GB): ~$1.19/hour on-demand (Runpod) — for big models and fine-tuning.

Spot is cheapest (can be interrupted); on-demand costs more but is stable.

Rent for occasional big-model use; buy if you run daily — see our rent-vs-buy math.

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