Anycubic Kobra S1 ACE 2 Pro Combo vs Elegoo Neptune 4
Head-to-head 3D printer comparison, 2026
The Anycubic Kobra S1 ACE 2 Pro Combo and Elegoo Neptune 4 are both FDM 3D printers competing in different tiers, $499 vs $199. We scored both across value, beginner-friendliness, quality, speed, and reliability. Here's the full breakdown.
Our Verdict
The Elegoo Neptune 4 takes the crown with 8.2/10 vs 8/10. It pulls ahead in Value, Beginner Friendliness. The Anycubic Kobra S1 ACE 2 Pro Combo still puts up a fight in Speed.
Score Breakdown
Specifications
| Spec | Anycubic Kobra S1 ACE 2 Pro Combo | Elegoo Neptune 4 |
|---|---|---|
| Price | $499 | $199 |
| Type | FDM | FDM |
| Build Volume | 250 x 250 x 250 mm | 225 x 225 x 265 mm |
| Print Speed | 600 mm/s | 500 mm/s |
| Min Resolution | 0.05 mm | 0.05 mm |
| Weight | 13 kg | 9.5 kg |
| Overall Score | 8/10 | 8.2/10 |
Pros & Cons
Anycubic Kobra S1 ACE 2 Pro Combo
+16 colors out of the box — doubles the 8-color S1 Combo and quadruples the Bambu A1 Combo (4)
+Fully enclosed CoreXY handles ABS, ASA, and engineering filaments without warping
+44dB quiet mode is unusually low for a 600mm/s CoreXY — apartment-friendly
+Upgraded hotend is rated for the full Anycubic filament range
+Early bird €459 undercuts the Bambu P2S (€549) and matches pricing of the older 8-color S1 Combo
−Brand new product — early adopter risk on firmware and ACE 2 Pro reliability
−Anycubic slicer still trails Bambu Studio on automation and profile polish
−ACE 2 Pro adds significant desk footprint
−Early bird pricing ends May 31 — regular price expected to climb
Elegoo Neptune 4
+Klipper at $199 means real input shaping and pressure advance, not just fast travel speeds
+Direct drive handles TPU without a fight
+500mm/s capable on stock profiles
+225mm bed is slightly larger than the V3 KE at the same price
−No WiFi on the base model: Elegoo charges extra for connectivity the KE includes free
−Elegoo's community is smaller than Creality's, which matters when you hit unusual problems
−Klipper config occasionally needs manual edits out of the box
Who Should Buy Which?
Choose the Anycubic Kobra S1 ACE 2 Pro Combo if you want:
- A great printer for multi-color
- A great printer for speed
- A great printer for enclosed
- ACE 2 Pro multi-color system (up to 16 colors)
- Fully-enclosed CoreXY architecture
- Upgraded hotend (all-filament compatible)
Choose the Elegoo Neptune 4 if you want:
- A great printer for budget
- A great printer for speed
- A great printer for beginners
- Klipper firmware
- Auto bed leveling
- Direct drive
Frequently Asked Questions
Is the Anycubic Kobra S1 ACE 2 Pro Combo better than the Elegoo Neptune 4?
By the numbers, the Elegoo Neptune 4 scores higher (8.2/10). But "better" depends on your use case, the Anycubic Kobra S1 ACE 2 Pro Combo may be the smarter buy if you need multi-color.
Which is better for beginners, Anycubic Kobra S1 ACE 2 Pro Combo or Elegoo Neptune 4?
The Elegoo Neptune 4 is more beginner-friendly (8/10 vs 7/10) with easier setup and a gentler learning curve.
Is the Anycubic Kobra S1 ACE 2 Pro Combo worth $300 more than the Elegoo Neptune 4?
The Elegoo Neptune 4 actually scores higher (8.2/10) despite costing $300 less. The Anycubic Kobra S1 ACE 2 Pro Combo only makes sense if you specifically need multi-color.
What's the main difference between Anycubic Kobra S1 ACE 2 Pro Combo and Elegoo Neptune 4?
Build volume (250x250x250mm vs 225x225x265mm) and print speed (600 vs 500 mm/s). The Anycubic Kobra S1 ACE 2 Pro Combo is best for multi-color; the Elegoo Neptune 4 targets budget.