the saryu class is a much older ship so it only has the 76mm oto melera and 2 ak630s. it has the sanket mk2 and the probably also has some anti torpedo decoy system. saryu might also get the BEl system as an upgrade so not bad.
the new NGOPV has the full anti drone suite from BEL, and the 76mm oto melera and the 2ak630s and even has some spare space for VLSRSAM or a small amount of UVLS in the future if there is a need for these on OPVs.
en.wikipedia.org
although wikipedia is not very reliable in defense matters, the article for this class is decent enough to get a good idea.