According to Peter Grosz in
Albatros Experimentals, the Alb Dr.I first appeared in September, 1917. By October, 1917 it was determined that the plane was tail-heavy and climbed poorly, and further development ceased.
It was essentially a D.V derivative, produced in response to Idflieg's interest in triplane designs. The single prototype unit was built using the fuselage from Alb D.Va D1573/17, powered by a Mercedes D.III rated at 160 hp and fitted with three wings of equal chord and span, no stagger and apparently zero dihedral. Each of the wings was equipped with ailerons whose motion was synchronized with connecting struts. Cooling was provided by two airfoil radiators mounted in the middle wing near the leading edge and close to the fuselage.
When you compare top and front views of the Alb Dr.I with the two best triplane designs, the Sopwith Triplane and Fokker Dr.I, it looks like a loser. The Alb Dr.I wings are too narrow in chord and too close together -- this combined with the lack of stagger meant that the top and bottom wings probably create interference in the air flow over the middle wing, reducing any lift it may have contributed. The wing arrangement probably also interferred with air flow over the tail surfaces as indicated by the reported tail-heaviness. The struts and rigging are numerous and draggy-looking.
Out of all the triplane designs I've seen, I agree with FOKKERJ -- the Pfalz Dr.I is the only one that looks like it could be in the same class as the Sopwith or Fokker designs. The Alb Dr.I and all the others are just half-hearted design exercises.