Okla. Stat. tit. 41, § 41-109: Rent

A. In the absence of agreement, the occupants of a dwelling

unit shall pay to the landlord as rent the fair rental value for the

use and occupancy of the dwelling unit.

B. Rent shall be payable at the time and place agreed to by the

parties. Unless otherwise agreed, the entire rent shall be payable

at the dwelling unit at the beginning of any term of one (1) month

or less, while one (1) month's rent shall be payable at the

beginning of each month of a longer term.