In a medium-sized mixing bowl, combine flour and baking soda. Set aside. In another large mixing bowl, combine butter, white sugar, brown sugar, vanilla, and pudding mix. Beat until smooth and creamy. Beat in eggs. Gradually stir in flour mixture. Stir in chocolate chips.
Drop batter by heaping teaspoonfuls, about 2 inches apart, onto an ungreased cookie sheet. Bake for 9 to 9 1/2 minutes, or until browned.