Teensy 4.1 vs Raspberry Pi Pico 2

The two boards side by side, from the same board files BoardPilot uses to check your wiring.

Teensy 4.1Raspberry Pi Pico 2
ChipMIMXRT1062DVJ6BRP2350
ProcessorArm Cortex-M7 at 600 MHz, 1024 KB RAM, 8 MB flash, native USBDual-core Arm Cortex-M33 or RISC-V Hazard3 at 150 MHz, 520 KB SRAM, 4 MB flash
Logic level3.3 V3.3 V
Header pins5343
GPIO pins4226
Analog inputs183
Default I2CSDA 18, SCL 19SDA GP4, SCL GP5
Default SPIMOSI 11, MISO 12, SCK 13MOSI GP19, MISO GP16, SCK GP18
5 V tolerant inputsno23 pins
Flashing toolTeensy Loaderpicotool (UF2)
Arduino boardteensy:avr:teensy41rp2040:rp2040:rpipico2

Which one to pick?

Full pinout: Teensy 4.1 · Full pinout: Raspberry Pi Pico 2