The long-run equilibrium in a competitive market characterized by firms with identical costs is generally characterized by firms operating at efficient scale.

Long-Run Equilibrium

A state in which all factors of production and costs are variable, allowing firms to enter and exit the market, and no economic forces are pushing for change.

Efficient Scale

The level of production at which a company or industry can produce its products at the lowest average cost, optimizing resource use.

Identical Costs

Costs that are the same in amount or value, often referring to uniform expenses across different units or operations.