Data as of 20 September 2026. The photo above is a stock image, not either printer.
Buy the P1S if you print PLA, PETG, ABS and ASA and want the cheapest enclosed Bambu that does them. Buy the P2S if carbon-fiber filaments or PC are on the list, or if you will watch prints remotely, because those are the places its extra $190 shows up in the specifications.
The figures are Bambu Lab’s own, from the P1S product page and its specification table and the P2S technical specifications. This is a comparison on paper. We have not printed on either machine.
Where they differ
| P1S | P2S | |
|---|---|---|
| Max bed temperature | 100 °C | 110 °C |
| Stock nozzle | 0.4 mm stainless steel | 0.4 mm hardened steel |
| Max toolhead speed | 500 mm/s | 600 mm/s |
| Max hotend flow | not given in the table we read | 40 mm³/s |
| Camera | 1280 x 720 at 0.5 fps | 1920 x 1080 at 30 fps |
| Filament line on the spec table | Ideal: PLA, PETG, TPU, PVA, PET, ABS, ASA. Capable: PA, PC | One list, which adds PLA-CF, PETG-CF, ABS-GF, ASA-CF, PA6-CF, PA6-GF, PAHT-CF, PPA-CF and PET-CF |
| Multi-material unit in our database | AMS or AMS 2 Pro | AMS 2 Pro |
| Outside dimensions | 389 x 389 x 458 mm | 392 x 406 x 478 mm |
| Net weight | 12.95 kg | 14.9 kg |
| US list price, checked 2026-09-20 | $359 | $549 |
Our database records the $359 as a sale price, with a $399 reference price on the same page that day. Against $399 the gap is $150.
Where they are the same
Same 256 x 256 x 256 mm build volume, same 300 °C maximum nozzle temperature, same 20,000 mm/s² maximum acceleration, same 0.2 to 0.8 mm nozzle options, both enclosed in plastic and glass, both with an activated carbon filter. Neither page states an actively heated chamber.
If a part does not fit a P1S, it does not fit a P2S.
What 10 °C of bed buys
Our compatibility check tests maximum nozzle temperature, maximum bed temperature and the enclosure against the ranges on filament makers’ data sheets. Both printers are enclosed and both reach 300 °C, so the only test that can split them is the bed.
| Material | Bed range on data sheets | P1S at 100 °C | P2S at 110 °C |
|---|---|---|---|
| PLA, PETG, TPU | up to 90 °C | Yes | Yes |
| ABS | 80 to 100 °C | Yes | Yes |
| ASA | 70 to 115 °C | With care | With care |
| Nylon, PA6 blends | 50 to 90 °C | Yes | Yes |
| Carbon-fiber nylon | 25 to 100 °C | Yes | Yes |
| PC | 90 to 110 °C | With care | Yes |
One row changes. PC moves from “With care” to “Yes”, because the P2S reaches the top of the 90 to 110 °C range on Bambu’s PC data sheet, where the P1S sits in the middle of it.
ASA stays “With care” on both. The ASA bed figures we hold are 70 to 95 °C from Overture, 80 to 100 °C from Bambu and 105 to 115 °C from Prusament. The P1S covers the first two and misses Prusament’s minimum. The P2S reaches the bottom half of Prusament’s range and still not the top. If you buy Bambu or Overture ASA, the extra 10 °C does nothing for you. The brand-by-brand spread is laid out in where filament makers disagree on settings.
A caution for PC on either machine: neither states a heated chamber, and some PC data sheets ask for one. Our check of 25 printers against ABS, ASA, nylon and PC has the numbers.
The nozzle matters more than the bed
The temperature table says both machines can run carbon-fiber nylon. The spec tables say something a temperature check cannot: the P1S ships with a stainless steel nozzle and the P2S with a hardened steel one, and the P2S page lists hardened steel extruder gears.
Fiber-filled filaments are abrasive, and stainless is the wrong thing to push them through. The filament lines agree. The P1S line stops at PA and PC as “Capable”. The P2S line names nine fiber-reinforced grades, from PLA-CF to PPA-CF.
A P1S owner can close part of that gap by fitting a hardened nozzle. Add its cost to the P1S price before comparing. If carbon-fiber parts are a regular job, the P2S is the one built for it as delivered. Fiber nylons also need serious drying, which is the same chore on both: see how to dry filament.
Speed and flow
The P2S quotes 600 mm/s against 500 mm/s, with identical acceleration. What limits real prints is how fast the hotend melts plastic.
The P2S page gives that figure: 40 mm³/s, measured with Bambu ABS at 280 °C on a 250 mm round single-wall model. The P1S table we read gives no flow figure, so there is no like-for-like comparison to make. See what 40 mm³/s allows at your settings in the volumetric flow calculator. At a 0.2 mm layer and 0.42 mm line, 40 mm³/s is used up at about 476 mm/s, and at a 0.28 mm layer at about 340 mm/s. The flow ceiling arrives before the 600 mm/s one does.
Camera, size and power
The P1S records 1280 x 720 at 0.5 fps, one frame every two seconds. The P2S records 1920 x 1080 at 30 fps. The first tells you whether the part is still on the bed. The second lets you see a corner start to lift.
The P2S page also lists a 5-inch touchscreen, dual-band Wi-Fi, no Ethernet, and a steady-state draw of 200 W when printing PLA. That is the number for running costs, not the 1200 W maximum, which the page says applies for the 3 to 5 minutes the bed takes to heat. Put it into the electricity cost calculator and the answer is small.
The P2S is 3 mm wider, 17 mm deeper, 20 mm taller and 1.95 kg heavier.
Who each one suits
Buy the P1S if your materials are PLA, PETG, TPU, ABS and Bambu or Overture ASA. On those, the P2S offers the same verdicts, the same build volume and the same nozzle temperature for $190 more. If you are still deciding whether you need an enclosure at all, start with the A1 against the P1S.
Buy the P2S if carbon or glass fiber filaments are a regular job, if you want PC at the top of its bed range, or if you monitor prints remotely and the camera will save you failed prints.
Skip both if nylon and PC are the main work, not the occasional job. Neither states a heated chamber, and the printer database lists enclosed machines with 120 °C beds that do.
