Page hit 5 of 11 3-pointers and 7 of 14 overall from the field. Brown scored 13 of his 19 in the second half and also had five assists. Michael Cobbins added 10 points for the Cowboys (5-2).
Langston (1-7), an NAIA program, was led by Modteets Williams, Jabril Bailey and Landon Gray with 13 points each. Paul Campbell added 11 for the Lions, who shot 35.6 percent from the floor and turned the ball over 19 times.
Oklahoma State won its 37th consecutive game at home against non-conference opponents.