Desktop 3D Printers

Bambu Lab P1S vs X1-Carbon: spec comparison

The Bambu Lab P1S and Bambu Lab X1-Carbon share a frame size, motion system and speed claims. The differences sit in the bed heater, the stock nozzle, the sensor package and the launch price.

By Desktop 3D Printers Editorial TeamPublished Verified

A Bambu Lab X1-Carbon with an AMS unit loaded with four filament spools on display in an electronics store
Photo: NAS 238 WMMNO, CC0 1.0
Bambu Lab P1S vs Bambu Lab X1-Carbon: full spec comparison
SpecBambu Lab P1SBambu Lab X1-Carbon
StatusShippingDiscontinued
ReleasedJul 2023Aug 2022
Launch price$699$1,199
Motion systemCoreXYCoreXY
AnnouncedJul 2023May 2022
Build volume256 × 256 × 256 mm256 × 256 × 256 mm
EnclosureEnclosed (passive)Enclosed (passive)
Air filtrationActivated carbonActivated carbon
Stock build plateTextured PEI, double-sided, flexible spring steel, magnetic (Bambu Dual-Sided Textured PEI Plate)Cool plate (low-temperature coating) / Engineering plate, double-sided, flexible spring steel, magnetic (Launch spec: Bambu Cool Plate with Engineering Plate on the reverse; Bambu says later X1 units shipped with varying plates)
Max chamber temp—60 °C
Max hotend temp300 °C300 °C
Max bed temp100 °C120 °C
Max speed (claimed)500 mm/s500 mm/s
Max acceleration (claimed)20,000 mm/s²20,000 mm/s²
Max volumetric flow (claimed)32 mm³/s32 mm³/s
ExtruderDirect driveDirect drive
Stock nozzle0.4 mm stainless steel0.4 mm hardened steel
Nozzles11
Multi-materialAMS (optional, 4 spools per unit, up to 4 units)AMS (optional, 4 spools per unit, up to 4 units)
Bed levelingAutomaticAutomatic
FeaturesFilament runout sensor, Camera, Input shaping, Air filtration, Power-loss recoveryFilament runout sensor, Camera, Lidar, Input shaping, Air filtration, Power-loss recovery, AI failure detection
FirmwareBambu Lab firmware (closed source)Bambu Lab firmware (closed source)
ConnectivityWi-Fi, Bluetooth, SD card, CloudWi-Fi, SD card, Cloud
Laser moduleNone offeredNone offered

The Bambu Lab P1S and the Bambu Lab X1-Carbon are enclosed CoreXY printers, which move the toolhead in X and Y and the bed only in Z. Both list a 256 × 256 × 256 mm build volume, a 300 °C hotend and the same claimed 500 mm/s top speed, 20,000 mm/s² acceleration and 32 mm³/s flow. The spec sheets differ on bed temperature, stock nozzle material, sensors and price.

What is the difference between the Bambu Lab P1S and X1-Carbon?

The Bambu Lab X1-Carbon lists a 120 °C bed to the Bambu Lab P1S’s 100 °C and ships with a hardened steel nozzle, not stainless steel. Only the X1-Carbon spec sheet lists a lidar (laser distance) sensor, camera-based AI failure detection and a 60 °C chamber temperature. The P1S launched at $699 and the X1-Carbon at $1,199.

Neither printer has a chamber heater, so the bed and hotend warm the enclosed air. The X1-Carbon’s 60 °C figure is the temperature Bambu Lab says its enclosure reaches. Bambu Lab publishes no chamber figure for the P1S.

Both accept Bambu Lab’s optional AMS (Automatic Material System), which holds four spools per unit. Up to four units connect to one printer, for 16 spools.

Do the Bambu Lab P1S and X1-Carbon have the same speed?

Yes, on paper. The Bambu Lab P1S and the Bambu Lab X1-Carbon both list a 500 mm/s maximum toolhead speed, 20,000 mm/s² acceleration and 32 mm³/s volumetric flow (the plastic the hotend can melt per second). These are manufacturer claims. Real print time also depends on the part, the material’s flow limit and the slicer profile.

Which materials does the spec sheet difference affect?

The Bambu Lab X1-Carbon’s hardened steel nozzle and 120 °C bed are the spec lines that affect material choice against the Bambu Lab P1S. Bambu Lab’s P1S extruder upgrade guide says stainless steel parts “can wear out quickly” with carbon-fiber and glass-fiber filled filaments, and that hardened steel is harder. A filament whose maker recommends a bed above 100 °C is outside the P1S’s listed range.

The nozzle line describes each printer as shipped, before any nozzle swap.

Are the Bambu Lab P1S and X1-Carbon still sold?

Bambu Lab still sells the P1S as a current model. The Bambu Lab X1-Carbon is discontinued: Bambu Lab announced the end of the X1 series, and the X1-Carbon reached end of life on March 31, 2026. New units now depend on remaining retail stock.

Sources

Last verified

  1. Bambu Lab, P1S technical specifications sheet (PDF) (accessed Sep 29, 2026)
  2. Bambu Lab, X1-Carbon technical specifications sheet (PDF) (accessed Sep 29, 2026)
  3. Bambu Lab, X1 series product page (accessed Sep 29, 2026)
  4. Bambu Lab via PR Newswire, Bambu Lab Launches X1 Series (2022-05-24) (accessed Sep 29, 2026)
  5. Tom's Hardware, Bambu Lab P1S review (2023-07-23) (accessed Sep 29, 2026)
  6. Bambu Lab Wiki, P1S extruder upgrade (stainless vs hardened steel) (accessed Sep 29, 2026)
  7. Bambu Lab Blog, The X1-series is EOL (accessed Sep 29, 2026)