Raspberry Pi Pico is the first product built on silicon designed in-house at Raspberry Pi (“Raspberry Silicon”). At its heart is RP2040, a Raspberry Pi-designed chip, which features two ARM Cortex-M0+ cores clocked at 133MHz with 256KB RAM, 26 GPIO pins, and a broad range of interfacing options. This is paired with 2MB of on-board QSPI Flash memory for code and data storage.
The board is programmable in MicroPython or C/C++, can be flashed using mass storage over USB, and has a wide input voltage range (~1.8 to 5.5V).
Note: The Raspberry Pi Pico is a completely different board than what you are used to from Raspberry Pi. This is a micro-controller, where the other boards are micro-computers.
There are several versions of the Raspberry Pi Pico available:
Pico H - With headers pre-soldered, so you can get started right away on a breadboard