Heat oven to 375°F. Mix flour with baking soda. Combine butter, sugars, vanilla, and pudding mix in large mixing bowl. Beat until smooth and creamy. Beat in eggs. Gradually add flour mixture. Stir in chips. Batter will be stiff. Drop by rounded teaspoonfuls, about 2 inches apart, onto ungreased baking sheets. Bake for 9 minutes.