Pudu BellaBot vs Keenon DinerBot T8: Two Waiter Robots in Polish Restaurants

The BellaBot is larger and stronger: 129 cm tall, 55 kg in mass, four trays and a 40 kg payload. The DinerBot T8 is 111 cm (384 × 468 × 1111 mm), 34 kg in mass, with three trays and a combined payload of 20 kg, half as much. Speed is 1.2 m/s for the BellaBot and 1.0 m/s for the T8. Runtime: the BellaBot up to 12 hours, the T8 up to 15 hours according to the maker; older trade offers gave 9–12 hours for the T8, so when ordering ask about the battery configuration. With such figures, runtime covers a full shift in both cases.

Navigation differs. The BellaBot finds its way by LiDAR and an RGB-D camera, making up to 5,400 obstacle scans a minute. The T8 detects obstacles with triple stereo vision and, according to the maker, moves through aisles from 55 cm wide; it also has a 10.1-inch touchscreen. For a restaurant with narrow passages this figure can be decisive, but 55 cm is a value declared for empty passages — measure the room with your own eyes, with chairs and guests. Distance sensors in such robots are a matter for specialist suppliers, such as SICK or Hokuyo, covered in our components overview. If you are looking for an intermediate model, check the Pudu BellaBot Pro, Pudu KettyBot Pro and Keenon DinerBot T5.

Price is an important argument here, but it comes mainly from the American market. The BellaBot costs 14,500 USD in the US, about 56,200 zloty at 3.8762, or 409 USD a month under a 36-month RaaS (robot-as-a-service) plan. Polish sellers quote prices on request; the trade press estimates the BellaBot at 45–70 thousand zloty net, though that is an estimate, not a manufacturer price list. The DinerBot T8 is priced in the US from about 5,500 to 11,000 USD depending on configuration, and 7,000 USD was taken as the value, about 27,130 zloty. On the Polish market the situation is less favourable: the T8 offer from the seller NetVet, recorded on Ceneo, is about 55.3 thousand zloty, so do not assume the American price gap carries over into zloty.

Availability is confirmed for both. The BellaBot is offered by sebotics.com, sas24.pl, rkserwis.com, gastrozona.pl and machinesforyou.pl, among others. The T8 is in the range of Polish Keenon distributors, including edikson.com and netvet.pl. Ask each for a price with tax, delivery, commissioning, training and a service agreement, because these decide the total cost. How to calculate the return on such an investment is described in “Service Robots in Restaurants and Hotels”.

In a restaurant with a large dining room, high occupancy and long routes from kitchen to tables, the BellaBot's larger payload is an advantage: more trays per run means fewer runs. If waiters are also to clear crockery from tables, four trays and 40 kg are a real plus. In a venue with tighter aisles and less traffic, the T8 is a sensible choice: it is lower and lighter, and its three trays suffice for ordinary service.

In a hotel, especially for breakfasts in the dining room or room service on one floor, the reliability of navigation and compatibility with the lift and doors can matter more than payload. Ask the supplier about lift integration and how the robot copes with guest traffic. Remember camera data too: the privacy question is discussed in “Data Security: Robots with Cameras and the GDPR”. The whole category is described in “Service robots”.