Anais is by far the most intelligent member of her family, although her young age prevents her from really being noticed by adults. She has been shown on numerous occasions to have a knack for solving problems, such as the time she figured a way out of her flooded house, and the time she developed a complex solution to solve the problem of getting her grandmother's luggage up a flight of stairs. Even though Anais is four-years-old, she attends Elmore Junior High because of her extremely high IQ; however, she is not in the same class as her brothers and instead goes to a junior kindergarten class located elsewhere in the school. Anais is also a valued member of the school's Physics Club, and her vast knowledge of the subject has actually saved her from being vaporized by an enormous robot. She is so smart that the only person smarter than her is EJ.
She is a remarkably cunning strategist as well, revealed in the episode The Remote, plotting elaborate schemes and decoying everybody's perceptions to achieve her goal. Though she is often underestimated due to her significantly young age, which she tends to use to her advantage.