Elegoo Mars 4 Ultra vs Prusa MK4S
Head-to-head 3D printer comparison — 2026
Comparing FDM to resin? The Elegoo Mars 4 Ultra ($199, RESIN) and Prusa MK4S ($799, FDM) use fundamentally different technologies. FDM melts filament layer by layer; resin cures liquid with UV light. Here's how they stack up.
Our Verdict
It's a dead heat — both score 7.8/10 overall. The Elegoo Mars 4 Ultra wins in Value, while the Prusa MK4S takes Beginner Friendliness, Reliability. Pick based on which strengths matter more to you.
Score Breakdown
Specifications
| Spec | Elegoo Mars 4 Ultra | Prusa MK4S |
|---|---|---|
| Price | $199 | $799 |
| Type | RESIN | FDM |
| Build Volume | 153 x 77 x 165 mm | 250 x 210 x 220 mm |
| Print Speed | 100 mm/s | 200 mm/s |
| Min Resolution | 0.01 mm | 0.05 mm |
| Weight | 6.8 kg | 7 kg |
| Overall Score | 7.8/10 | 7.8/10 |
Pros & Cons
Elegoo Mars 4 Ultra
+9K resolution for exceptional detail
+Tilt release reduces FEP wear
+Built-in air purifier
+WiFi connectivity
−Smaller build plate than Saturn
−Requires wash & cure station
−Resin learning curve
Prusa MK4S
+Legendary reliability
+Fully open source
+PrusaSlicer is excellent
+Best customer support in the industry
−Expensive for the speed
−Slower than CoreXY competition
−Open frame
−Showing its age vs Bambu
Who Should Buy Which?
Choose the Elegoo Mars 4 Ultra if you want:
- A great printer for miniatures
- A great printer for resin
- A great printer for budget
- 9K mono LCD
- Tilt release
- WiFi
Choose the Prusa MK4S if you want:
- A great printer for reliability
- A great printer for open-source
- Open source
- PrusaSlicer
- Nextruder
Frequently Asked Questions
Is the Elegoo Mars 4 Ultra better than the Prusa MK4S?
They tie at 7.8/10. The Elegoo Mars 4 Ultra suits miniatures and resin, while the Prusa MK4S is aimed at reliability and open-source.
Which is better for beginners, Elegoo Mars 4 Ultra or Prusa MK4S?
The Prusa MK4S is more beginner-friendly (8/10 vs 7/10) with easier setup and a gentler learning curve.
Is the Prusa MK4S worth $600 more than the Elegoo Mars 4 Ultra?
The Elegoo Mars 4 Ultra actually scores higher (7.8/10) despite costing $600 less. The Prusa MK4S only makes sense if you specifically need reliability.
What's the main difference between Elegoo Mars 4 Ultra and Prusa MK4S?
Technology: the Elegoo Mars 4 Ultra is RESIN (filament) and the Prusa MK4S is FDM (resin). FDM prints bigger functional parts; resin delivers finer surface detail.