Anycubic Kobra S1 vs Elegoo Neptune 4 Plus
Technical comparison · Fused filament fabrication (FFF/FDM)
The two machines do the same job with opposite priorities: the Neptune 4 Plus costs about 200 € less and has a much larger volume, while the Kobra S1 is enclosed and reaches 8 colors with the accessory.
| Parameter | ||
|---|---|---|
| Identity | ||
| Launch year | 2025 | 2023 |
| Use tier | F2 — Intermediate | F2 — Intermediate |
| Price | ||
| Price (€) | 549 € | ~300–400 € |
| Price updated on | 06/2026 | — |
| Universal specs | ||
| Dimensions (W×D×H) (cm) | 40 × 41 × 49 cm | 53.3 × 51.7 × 63.8 cm |
| Weight (kg) | 18 kg | 14.4 kg |
| Work area (mm) | 250 × 250 mm | 320 × 320 mm |
| Z-axis height (mm) | 250 mm | 385 mm |
| Maximum speed | 600 mm/s | 500 mm/s |
| Declared precision | 0.05 mm | 0.1 mm |
| Category specs | ||
| Footprint X×Y (short side) (mm) | 250 mm | 320 mm |
| Build height Z (mm) | 250 mm | 385 mm |
| Kinematics | CoreXY | Cartesian |
| Max nozzle temperature (°C) | 320 °C | 300 °C |
| Max bed temperature (°C) | 120 °C | 110 °C |
| Max print speed (mm/s) | 600 mm/s | 500 mm/s |
| Enclosed chamber | Yes | No |
| Filament sensor | Yes | Yes |
| Auto bed leveling | Mesh | Mesh |
| Standard nozzle diameter (mm) | 0.4 mm | 0.4 mm |
| Multi-extruder | No | No |
| Native Klipper | Yes | Yes |
| Input shaper | Yes | Yes |
| Multicolor printing | Yes | No |
| Multicolor requires accessory | Yes | No |
| Max colors | 8 | 1 |
| Ecosystem | ||
| Cloud dependency | No | No |
| Software notes | The Kobra OS firmware is based on Klipper and controlled via a proprietary touch interface. The official slicer is Anycubic Slicer Next (derived from OrcaSlicer, available for Windows and macOS), but it also supports third-party OrcaSlicer. Remote control is possible via the Anycubic app (iOS/Android) over a local network, with no mandatory cloud connection for daily operations. | The printer operates with Klipper firmware pre-installed on a 64-bit ARM processor, enabling advanced standard features like input shaping and pressure advance. The user interface is managed via a removable capacitive touchscreen and a dedicated web interface (Fluidd or Mainsail) for remote control and monitoring via Wi-Fi or LAN connection. For file preparation, the machine is compatible with major slicers on the market, including Elegoo Cura (bundled by the manufacturer), UltiMaker Cura, PrusaSlicer, and OrcaSlicer. |
The differences that matter
- Volume 320×320×385 mm vs 250×250×250 mm → what fits in one piece on the Neptune has to be split on the Kobra.
- Enclosed chamber vs open machine → only the Kobra S1 keeps heat around the part.
- Up to 8 colors with an accessory vs a single color → the Neptune has no multicolor.
- 549 € vs 300–400 € → the Neptune 4 Plus costs about 200 € less.
Which one to choose
Choose Kobra S1 if…
Multicolor models, up to 8 colors with the accessory, printed in an enclosed chamber with the nozzle up to 320 °C and the bed up to 120 °C (manufacturer-declared values). The trade-off is the volume, 250×250×250 mm, and about 200 € more.
Choose Neptune 4 Plus if…
Large single-color parts, up to a 320×320 mm base and 385 mm tall, without splitting the model. The trade-off is an open machine, with the nozzle at 300 °C and the bed at 110 °C, and no multicolor.
Where to buy
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Filaments for these printers
The most chosen spools among the materials both printers can print according to their specifications.
- ELEGOO PLA PLA1.75 mm1 kg Check the price on Amazon →
- Bambu Lab PLA PLA1.75 mm1 kg Check the price on Amazon →
- SUNLU PETG (Polyethylene Terephthalate Glycol) PETG (Polyethylene Terephthalate Glycol)1.75 mm1 kg Check the price on Amazon →
- SUNLU PLA PLA1.75 mm1 kg Check the price on Amazon →
- OVERTURE PETG (Polyethylene Terephthalate Glycol) PETG (Polyethylene Terephthalate Glycol)High speed1.75 mm1 kg Check the price on Amazon →
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