1. Raspberry Pi 4 Model B: This is the latest model of Raspberry Pi, released in June 2019. It features a 1.5GHz 64-bit quad-core ARM Cortex-A72 CPU, dual-band 802.11ac wireless LAN, Bluetooth 5.0, and Gigabit Ethernet.
2. Raspberry Pi 3 Model B+: This model was released in March 2018 and features a 1.4GHz 64-bit quad-core ARM Cortex-A53 CPU, dual-band 802.11ac wireless LAN, Bluetooth 4.2, and Gigabit Ethernet.
3. Raspberry Pi 3 Model A+: This model was released in November 2018 and features a 1.4GHz 64-bit quad-core ARM Cortex-A53 CPU, dual-band 802.11ac wireless LAN, Bluetooth 4.2, and Gigabit Ethernet.
4. Raspberry Pi Zero W: This model was released in February 2017 and features a 1GHz single-core ARM Cortex-A8 CPU, 802.11n wireless LAN, Bluetooth 4.1, and Mini HDMI.
5. Raspberry Pi Zero: This model was released in November 2015 and features a 1GHz single-core ARM Cortex-A8 CPU, Mini HDMI, and Micro USB ports.