The “standard” Benedictine Office is still the one specified by St Benedict with one exception, it is now permitted to distribute the psalms of Prime into other Hours (usually Vigils or the minor hours).
However the individual abbeys are permitted to adopt other Offices. The minimum is a two-week cycle (approx. 75 psalms per week). Those that exercise a heavy external Uapostolate (e. g. teaching, parish work) may use the current 4-week LOTH.
One thing to keep in mind is that the previous choir Office using the Benedictine schema became so elaborate over time due to so many feasts and octaves, special days, etc. tha two classes of monks developed: choir monks, all well-educated priests or deacons and monks on their way to becoming priests, and less educated lay brothers that did the manual work of the monastery. They usually had their own “little Office”.
This was contrary to the wishes of St Benedict where all are supposed to be equal in the monastery except for service at the altar.
The traditional Benedictine Office thus benefits from the simplification of the liturgical calendar though it still remains a very heavy Office (approx. 250 psalms a week).
The most popular formula is that developed by Notker Fueglister in the 60’s. It does the entire psalter in 1 week (with a couple of 2-week variants). It is used at the abbey I’m affiliated with. But there is much variation. Last weekend I was at Douai Abbey in the UK. They use a 4-week cycle for Matins and the midday office and the 1-week Monastic antiphonary for Vespers which they do in Latin. They also use monastic Compline in English.
My main point though is that this simplification helped facilitate the return to St Benedict’s original Benedictine charism by abolishing the dual class of monks. At our abbey, since about 30 years the lay brothers became full professed members of the monastic community.
And that’s a very good thing!