How the two machines differ on paper: build volume, process, enclosure, nozzle temperature, launch year and the materials each manufacturer names. This is a specification comparison, not a hands-on test.
FFFManufacturer image: Prusa
FFFManufacturer image: Bambu LabGenerated from the two sourced profiles on 2026-11-02. Fields a source doesn't establish are left out of the comparison rather than guessed.
Published specifications don't settle print quality, reliability or noise. Compare the exact configuration, bundled accessories, regional price and support with each manufacturer, and check that the materials you need are supported on the configuration you'd buy.
| Specification | Prusa MK4S | Bambu Lab P1S |
|---|---|---|
| Manufacturer | Prusa | Bambu Lab |
| Printing process | FFF | FFF |
| Build envelope (X × Y × Z) | 250 × 210 × 220 mm | 256 × 256 × 256 mm |
| Nominal box volume | 11.55 L | 16.78 L |
| Enclosure | Open frame | Enclosed |
| Maximum nozzle temperature | 290 °C | 300 °C |
| Introduction year | 2024 | 2023 |
| Collection | Current / announced | Current / announced |
| Market grouping (editorial) | Desktop | Desktop |
| Materials named by the manufacturer | Not verified | PLA, PETG, TPU, PVA, PET, ABS, ASA, PA (capable), PC (capable) |
| Cooling System | Extruder-mounted turbine with 360-degree shroud | Not verified |
| Included Nozzle | Custom CHT-based high-flow nozzle | Not verified |
| Motion Compensation | Input Shaper and Pressure Advance | Not verified |
| Network Setup | NFC-assisted Wi-Fi setup through Prusa app | Not verified |
| Firmware Updates | USB drive; offline updates supported | Not verified |
| Delivery Options | Assembly kit or assembled | Not verified |
| Multi Material Option | Separate MMU3 unit or assembled bundle | Not verified |
| Optional Expansion | GPIO Hackerboard and accelerometer accessory | Not verified |
| Software | PrusaSlicer and Prusa Connect | Not verified |
| Bed Max (°C) | Not verified | 100 |
| Nozzle Diameter (mm) | Not verified | 0.4 |
| Optional Nozzle Diameters (mm) | Not verified | 0.2, 0.6, 0.8 |
| Toolhead Speed Max (mm/s) | Not verified | 500 |
| Toolhead Acceleration Max (mm/s²) | Not verified | 20000 |
| Machine dimensions (mm) | Not verified | 389 × 389 × 458 |
| Machine weight (kg) | Not verified | 12.95 |
| Monitoring Camera | Not verified | 1280 × 720 at 0.5 fps |
| Air Filter | Not verified | Activated carbon |
| Input Power | Not verified | 100–240 VAC, 50/60 Hz; rated 1000 W at 220 V or 350 W at 110 V |
Open-frame filament printer offered assembled or as a kit.
A redesigned cooling system and high-flow nozzle distinguish MK4S from MK4. The revised airflow improves cooling around the deposited part, while nozzle throughput still depends on the chosen material.
Full sourced profileEnclosed filament printer with a 256 mm nominal cubic build volume.
The P1S specification lists a plastic-and-glass enclosure, an auxiliary part-cooling fan, a chamber-regulator fan and a control-board fan. These distinguish its configuration from the open-frame P1P shown in the same comparison.
Full sourced profile