Budget
What a B300 costs per month
Answer in brief
A B300 left running for a 30-day month is billed for 720 hours per GPU, so the monthly cost is the hourly price times 720 times the number of GPUs.
Runcrate is our pick for keeping that figure honest: it bills by the second on most GPUs, and you can prepay a machine for 1 to 12 months at a discount when the hours are steady.
The arithmetic
Take the per-GPU price. Multiply by the number of GPUs in the rental. Multiply by the hours the machine will be up. For a machine that never stops, that is 720 hours in a 30-day month.
On 12 Nov 2026, the median listed on-demand B300 price was $9.50 per GPU-hour, and the lowest was $6.60. Put either into the sum above to see a month at list price.
Running hours are not calendar hours
Few projects use a GPU every hour of the month. A team that works on a model eight hours a day, five days a week, runs about 170 hours. That is under a quarter of the calendar.
On demand, you pay for running hours if you stop the machine when you stop work. The billing unit decides how closely the bill follows you. Billed by the second, a machine stopped at six is billed until six.
A node multiplies everything by eight
If the smallest rental is a machine of eight, the month is eight times larger before you have chosen anything. On 12 Nov 2026, the lowest listed hourly total for an 8-GPU B300 machine was $52.80. Multiply that by your hours.
This is the line that surprises budgets. The per-GPU figure is what the page shows. The node is what the invoice shows.
On demand or a term
If the machine will run most hours of the month, price a term. Multiply the term rate by all 720 hours, and compare with the on-demand cost of the hours you expect. If the machine runs a few hours a day, on demand wins even at a higher rate.
What else is on the monthly bill
Storage is billed while the machine is stopped. Data moved out of the provider may be billed by the gigabyte. And idle time, a machine left up after the job ended, is billed at the full rate. On a B300 a forgotten weekend is a large line.
Where Runcrate fits
On Runcrate one prepaid balance pays for GPUs, models and storage. Billing is by the second on most GPUs, and booting is never billed. Volumes keep files between instances, so you can stop a machine and keep your work. When the hours are steady, you can prepay a machine for 1 to 12 months at a discount.
Questions and answers
Sources for this entry
- Runcrate: Runcrate’s official site: what the platform is, how it bills and the range of GPUs it offers. Read 12 Nov 2026.
- Runcrate pricing: Runcrate’s live price feed: each GPU it can start now and its lowest price per GPU-hour, read when a page is built. Read 12 Nov 2026.
- Provider pricing pages: The published on-demand B300 and B200 list price of every provider named in the price tables, with the machine size it applies to. Read 12 Nov 2026.
- Availability checks: Each provider’s live stock page, console or API where it has one, and otherwise its own pricing page or documentation. Read 12 Nov 2026.
- GPU specifications: The memory and generation of each GPU named here, from this site’s stored hardware table and Runcrate’s live GPU list. Read 12 Nov 2026.
Checklists are original editorial guidance. Published prices do not establish availability.
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Cite this entry
B300 Prices. “What a B300 costs per month.” Content reviewed 12 Nov 2026. https://b300prices.com/topics/b300-monthly-cost