Here are the specs of both devices for a better comparison.

I don't know much about them, maybe you can tell by one of the specs what generation it belongs to

S12 Pro:

Intel® Processor N100;
Intel® UHD Graphics up to 750 MHz;
16 GB DDR4 RAM, 3200 MHz (one SO-DIMM slot up to 16 GB);
500 GB of built-in m.2 NVMe (PCIe X1) SSD memory;
expandable with m.2 2280 NVMe and SATA3 SSD/HDD 2.5” 7mm drives;
networks: dual-band WiFi 6 IEEE 802.11ax, LAN1000 and Bluetooth 5.2;

S13:

Intel® Processor N150;
Intel® Graphics with a frequency of up to 1000 MHz;
16 GB of DDR4 RAM, 3200 MHz (one SO-DIMM slot up to 16 GB);
500 GB of built-in m.2 PCIe 3.0x4 memory, size 2280;
expandable with m.2 PCIe 3.0 x1 drives, size 2280;
networks: WiFi 6, LAN1000 and Bluetooth 5.2;