Self-Hosted LLM vs Cloud API Cost Calculator

Self-hosted LLM vs cloud API cost

✓ Last verified: 2026-07-15· Source: official provider pricing page· Auto-monitored — report change →

Run your own GPU or pay per token? A rented GPU is a fixed monthly cost; a cloud API is per token. Enter your volume and setup to see which is cheaper now — and the exact token volume where self-hosting takes over.

Fixed cost vs per-token cost

The whole decision comes down to one shape. A cloud API is a straight line through the origin: zero tokens, zero cost; double the tokens, double the bill. A self-hosted GPU is a flat line: you pay the same rental whether it serves one request or a million, until you saturate it and rent another. At low volume the API is obviously cheaper — you'd be paying for an idle GPU. Somewhere up the curve the lines cross, and beyond that break-even volume your own hardware wins. This tool finds that crossover for your numbers.

Utilization is the hidden killer

The mistake people make is comparing a 24/7 GPU rental against an API at peak traffic. But traffic isn't flat — it's spiky. If your GPU is only busy 40% of the time, you're paying full rental for less than half the work, so your real cost per token is more than double the napkin math. Self-hosting only pays off when the GPU stays genuinely busy: steady traffic, request batching, and a queue that smooths spikes. Below the break-even line, the convenience and zero-idle billing of an API almost always wins.

Decide with the full picture

Even above break-even, the GPU bill isn't the whole story — budget for the engineering to deploy and babysit the model, monitoring, and scaling for spikes. Many teams run a hybrid: self-host the steady baseline load and burst to an API for peaks. Model the API side precisely with the AI cost calculator and the AI app cost estimator, and if you're deciding between providers first, compare them on the AI API guides.

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Frequently asked questions

When is self-hosting an LLM cheaper than a cloud API?

Self-hosting wins above a break-even token volume, because the GPU is a fixed monthly cost whether it's busy or idle. A cloud API charges per token, so it's cheaper at low volume. Once your monthly tokens are high enough that the per-token API bill exceeds the fixed GPU rental, your own hardware becomes the cheaper option — this calculator computes that exact crossover.

Why does GPU utilization matter so much?

A rented GPU costs the same whether it serves one request or runs flat out. If it sits idle 80% of the time, you're paying full price for 20% of the work, so your effective cost per token is 5× higher. Self-hosting only beats an API when you keep the GPU genuinely busy — batching, queueing and steady traffic are what make it pay off.

What costs does self-hosting add beyond the GPU?

The GPU rental is the headline, but real total cost of ownership also includes engineering time to deploy and maintain the model, monitoring, autoscaling for traffic spikes, storage and egress, and the opportunity cost of slower iteration versus a managed API. Factor a margin on top of the raw GPU number before deciding.