Prusa MK4S vs QIDI X-Smart 3
Head-to-head 3D printer comparison — 2026
The Prusa MK4S and QIDI X-Smart 3 are both FDM 3D printers competing in different tiers — $799 vs $349. We scored both across value, beginner-friendliness, quality, speed, and reliability. Here's the full breakdown.
Our Verdict
The QIDI X-Smart 3 takes the crown with 8/10 vs 7.8/10. It pulls ahead in Value, Speed. The Prusa MK4S still puts up a fight in Print Quality and Reliability.
Score Breakdown
Specifications
| Spec | Prusa MK4S | QIDI X-Smart 3 |
|---|---|---|
| Price | $799 | $349 |
| Type | FDM | FDM |
| Build Volume | 250 x 210 x 220 mm | 175 x 175 x 165 mm |
| Print Speed | 200 mm/s | 600 mm/s |
| Min Resolution | 0.05 mm | 0.05 mm |
| Weight | 7 kg | 9.5 kg |
| Overall Score | 7.8/10 | 8/10 |
Pros & Cons
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
QIDI X-Smart 3
+Fully enclosed in a compact footprint
+Chamber heating for better layer adhesion
+Good software experience
+Fast CoreXY
−Small 175mm build volume
−QIDI ecosystem smaller than Bambu
−175mm limits large prints
Who Should Buy Which?
Choose the Prusa MK4S if you want:
- A great printer for reliability
- A great printer for open-source
- Open source
- PrusaSlicer
- Nextruder
Choose the QIDI X-Smart 3 if you want:
- A great printer for compact
- A great printer for enclosed
- A great printer for beginners
- Enclosed CoreXY
- Chamber heating (35C)
- Auto bed leveling
Frequently Asked Questions
Is the Prusa MK4S better than the QIDI X-Smart 3?
By the numbers, the QIDI X-Smart 3 scores higher (8/10). But "better" depends on your use case — the Prusa MK4S may be the smarter buy if you need reliability.
Which is better for beginners, Prusa MK4S or QIDI X-Smart 3?
Both score 8/10 for beginners. Go with the QIDI X-Smart 3 to save $450.
Is the Prusa MK4S worth $450 more than the QIDI X-Smart 3?
The QIDI X-Smart 3 actually scores higher (8/10) despite costing $450 less. The Prusa MK4S only makes sense if you specifically need reliability.
What's the main difference between Prusa MK4S and QIDI X-Smart 3?
Build volume (250x210x220mm vs 175x175x165mm) and print speed (200 vs 600 mm/s). The Prusa MK4S is best for reliability; the QIDI X-Smart 3 targets compact.