Is there anything to build?
Very little. It arrives ready-made: unbox it, charge it and connect it to your Wi-Fi. You'll still set up the bridge to your AI assistant, and our setup prompt walks you through that.
Does it need a separate Raspberry Pi?
No. A Raspberry Pi compute module is built in (CM4 or CM5, depending on the version you pick), so there's nothing extra to buy for the brain.
CM4 or CM5: which should I get?
It's the same robot either way. The CM5 is Raspberry Pi's newer, faster compute module, so it handles camera and voice tasks more quickly. The CM4 version costs less. If the budget stretches, we'd pick the CM5. Check both on Amazon for today's prices.
Can it go up steps?
No. It rolls on wheels, so it's for one floor at a time. Thick rugs and high thresholds can stop it too.
Why does it cost more?
You're paying for it being ready-made, with a Raspberry Pi built in, a screen face and voice built in. If you enjoy building, the kits are cheaper.