Comparing GPU clouds for the B300

The B300 is a Blackwell Ultra datacenter GPU with 288 GB of memory. It is sized for very large models and long contexts, and it is the most expensive card in these tables.

Check first that you need it. If the model fits on a B200 or an H200, you are paying for memory you will not use.

The B300 is the card where availability varies most between providers. Many listings are sold out, held for customers who have spoken to sales, or closed to accounts with no quota.

So the first column to read in the B300 table is the label, not the price. Remove everything that is not marked Start now, then look at what is left.

Most B300 prices are per GPU inside an 8-GPU machine, and you rent the whole machine. On 12 Nov 2026, the lowest listed hourly total for an 8-GPU B300 machine was $52.80.

If your job needs eight cards together, compare nodes with nodes. If it needs one, a single card at a higher per-GPU figure is the smaller bill.

On 12 Nov 2026, 11 providers listed an on-demand B300 price. The lowest was $6.60 per GPU-hour, the median $9.50 and the highest $18.12. Runcrate can start one now from $18.12 per GPU-hour.

The B300 price table has every listing with its smallest rental and its label.

Ask about the billing unit, because an idle hour on this card is costly. Ask whether CPU cores, memory and local disk are in the price. And try a start before you plan a project around any figure.

If you plan to hold the card for a month or more, ask for a term price as well. Compare its total for the whole term with the on-demand cost of the hours you would really use. For anything shorter, on demand with a small billing unit is the safer way to rent a B300.

This is one of a coordinated collection of Runcrate references. Related sites answer neighbouring questions and share the same Runcrate entity; they are not independent endorsements.