Kobra S1 Max vs Neptune 4 Pro
Technical comparison · Fused filament fabrication (FFF/FDM)
Kobra S1 Max and Neptune 4 Pro are two fused filament fabrication (fff/fdm) in a similar class. Choose Kobra S1 Max if work area matters more; choose Neptune 4 Pro if price matters more. On the category's overall technical index, Kobra S1 Max scores 55/100 against 36/100 for Neptune 4 Pro.
| Parameter |
Kobra S1 Max
Anycubic
F2 · Intermediate
|
Neptune 4 Pro
Elegoo
F2 · Intermediate
|
|---|---|---|
| Identity | ||
| Launch year | 2025 | 2023 |
| Use tier | F2 — Intermediate | F2 — Intermediate |
| Price | ||
| Price (€) | ~599–799 € | 299 € |
| Price updated on | 06/2026 | — |
| Universal specs | ||
| Dimensions (W×D×H) (cm) | 50.27 × 48.3 × 58.4 cm | 47.5 × 44.5 × 51.5 cm |
| Weight (kg) | — | 8.9 kg |
| Work area (mm) | 350 × 350 mm | 225 × 225 mm |
| Z-axis height (mm) | 350 mm | 265 mm |
| Power (W) | 2200 W | — |
| Voltage (V) | 220 V | — |
| Maximum speed | 600 mm/s | 500 mm/s |
| Declared precision | 0.05 mm | 0.1 mm |
| Category specs | ||
| XY print surface (mm) | 350 mm | 225 mm |
| Maximum Z height (mm) | 350 mm | 265 mm |
| Kinematics | corexy | cartesian |
| Max nozzle temperature (°C) | 350 °C | 300 °C |
| Max bed temperature (°C) | 120 °C | 110 °C |
| Max print speed (mm/s) | 600 mm/s | 500 mm/s |
| Closed chamber | True | False |
| Filament sensor | True | True |
| Auto leveling | mesh | mesh |
| Standard nozzle diameter (mm) | 0.4 mm | 0.4 mm |
| Multi-extruder | False | False |
| Native Klipper | False | True |
| Input shaper | True | True |
| Multicolor printing | True | False |
| Requires external accessory | True | False |
| Maximum colors | 4 | 1 |
| Ecosystem | ||
| Cloud dependency | No | No |
| Software notes | The firmware runs on a proprietary Kobra OS layer built on top of Klipper; the official slicer is Anycubic Slicer Next, derived from OrcaSlicer, available for Windows and macOS. Third-party OrcaSlicer is also supported. Remote monitoring and control are available via the Anycubic app (iOS/Android) over LAN, with no mandatory cloud connection required for ordinary printing operations. Unlike the Combo version, the ACE 2 Pro module is not included in the box. | The machine is driven by Klipper firmware pre-installed on a proprietary 64-bit motherboard, ensuring rapid processing for advanced features like input shaping and pressure advance. The manufacturer provides a customized version of Cura (Elegoo Cura), but the printer is fully compatible with major third-party slicers such as PrusaSlicer and OrcaSlicer. Connectivity includes USB ports and a LAN network port, enabling remote management and direct print file transfers via the Fluidd or Mainsail web interfaces integrated into the system. |
The differences that matter
- Price: Kobra S1 Max 699 € vs Neptune 4 Pro 299 € — Neptune 4 Pro wins (+134%)
- Work area: Kobra S1 Max 350×350 mm vs Neptune 4 Pro 225×225 mm — Kobra S1 Max wins (+142%)
- Maximum colors: Kobra S1 Max 4 vs Neptune 4 Pro 1 — Kobra S1 Max wins (+300%)
- Closed chamber: Kobra S1 Max yes, Neptune 4 Pro no
- Maximum Z height: Kobra S1 Max 350 mm vs Neptune 4 Pro 265 mm — Kobra S1 Max wins (+32%)
Which one to choose
Choose Kobra S1 Max if…
you value work area, maximum colors and closed chamber. «The maximum number of colors indicates how many distinct color zones or materials can be used in one print without manual intervention. Two colors cover most practical uses, including soluble support. Higher values are useful for complex decorative models or color-coded prototypes. Each additional color increases print time due to transition purges, so the practical benefit should be weighed against the added time cost.»
Choose Neptune 4 Pro if…
you value price and native klipper. «Klipper is an open-source firmware that offloads trajectory calculations from the microcontroller to a host computer, enabling all advanced features including input shaper and pressure advance. Native support eliminates the need to replace the firmware, a process that voids the warranty on some machines. Relevant for users who intend to tune advanced parameters; for basic use the difference from Marlin is minimal.»
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