Despite dominating the possession, Sociedad entered the break behind courtesy of a strike from Jorge Molina.
Betis found an equaliser of their own after 66 minutes when Pabon advanced into the box before sliding his effort into the back of the net.
Both sides pushed for the winner in the latter stages, but neither could break the breakthrough as the points were shared in the six-goal thriller.
Read how it all unfolded in Sports Mole's minute-by-minute live commentary of the action below.
SOCIEDAD: Bravo; Mikel, De La Bella, I Martinez, C Martinez; Prieto, Zurutuza, Bergara, Agirretxe; Vela, Griezmann
BETIS: Adrian; Nacho, Lopez, Mario, Amaya; Benat, Canas, Carlos, Molina; Campbell, Pabon