Calculators that use the same live prices and datasheet-checked specs as the rest of the site. Each one states its formula.
Work out how much VRAM a model needs at a given precision, context length and batch, and which GPU setups fit it at today's prices.
Compare owning a GPU (purchase, power, colocation, resale) with renting it at the live cheapest and median price, and find the break-even month.
Looking for tables instead? See the reference pages.