2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/16408We present two new integrable spin ladder models which posses three general free parameters besides the rung coupling J. Wang's systems based on the SU(4) and SU(3/1) symmetries can be obtained as special cases. The models are exactly solvable by means of the Bethe ansatz method.6 pages, LaTexStatistical Mechanicstext