The Elegoo Neptune 4 Pro (prosumer) and Prusa Research CORE One L+ (professional) come from different brands and sit in different tiers, so this is less a head-to-head than a question of how much printer you need. The CORE One L+ costs $1,739 more and gets you an enclosed chamber (with PA, PA-CF and PC on its materials list) and 121% more build volume.
Overdue for a refresh — no successor announced yet. Prices should be at their lowest
Best for: Budget-conscious makers who want a capable bed-slinger with Klipper firmware for customization — without Bambu's closed ecosystem or Prusa's premium pricing.
Full details →Early in release cycle — no urgency to wait
🔧 Upgrade kit available — from CORE One L
Best for: Engineers and professional makers who need large-format enclosed printing with active chamber heating — and want Prusa's open-source ethos and long-term support over a closed-ecosystem competitor.
Full details →| Elegoo Neptune 4 Pro | Prusa Research CORE One L+ | |
|---|---|---|
| Pricing | ||
| Starting Price | ★ $260 | $1,999 |
| Print Specs | ||
| Tier | Prosumer | Professional |
| Motion | BedSlinger | CoreXY |
| Build Volume | 225 × 225 × 265 mm | ★ 300 × 300 × 330 mm |
| Max Speed | 500 mm/s | 500 mm/s |
| Multicolor | ❌ No | ❌ No |
| Enclosure | ❌ | ★ ✅ |
| Auto Calibration | ✅ | ✅ |
| Open Source | ❌ | ★ ✅ |
| Upgrade Kit | — | 🔧 From CORE One L |
| Buy Timing | ||
| Released | Jul 15, 2023 | Aug 13, 2026 |
| Cycle length | ~450 days | ~279 days |
| Cycle advice | Wait | Buy |
| Deals advice | Buy | Caution |
| Next model | — | — |
The Neptune 4 Pro was released on Jul 15, 2023, 1,216 days ago. Its previous release cycle ran about 450 days; it is now 766 days past that point and no successor has been announced.
The CORE One L+ was released on Aug 13, 2026, 91 days ago. Its previous release cycle ran about 279 days, so it is 33% of the way through — roughly 188 days before a successor would be due at that pace.
On timing alone, the CORE One L+ is the safer buy right now — it is only 33% of the way through its expected cycle, while the Neptune 4 Pro is 766 days past its ~450-day cycle with no successor announced.
Cycle and deal status as of November 12, 2026. See the launch calendar →
The Neptune 4 Pro lists at $260 and the CORE One L+ at $1,999 — $1,739 apart, so the CORE One L+ costs 669% more.
Per litre of build volume, that works out to $19 for the Neptune 4 Pro versus $67 for the CORE One L+ — the Neptune 4 Pro is the better value per litre as well.
If you are buying before Dec 5, 2026, the active sale tips value toward the Neptune 4 Pro.
Our pick for most buyers is the CORE One L+, for an enclosed chamber (with PA, PA-CF and PC on its materials list) and 121% more build volume, plus a higher editor score (8.6 vs 7.7) and better buy-now timing. Go for the Neptune 4 Pro instead if you want to spend less — it is $1,739 cheaper ($260 vs $1,999).
How we judge timing and deals: read our methodology →
The Neptune 4 Pro ships with Klipper pre-installed — enabling advanced input shaping, pressure advance, and configuration flexibility without modding.
A 500 mm/s rated speed at a price significantly below Bambu and Prusa alternatives.
Full automatic bed leveling reduces setup time and calibration friction.
A large enclosed build volume with genuine active chamber heating — making the CORE One L+ reliable for ABS, ASA, PA, and PC across the full build plate.
All firmware, hardware designs, and slicing profiles are open source. Prusa backs the CORE One L+ with long-term parts availability and community support.
For institutional, government, and production customers, a dedicated Critical Infrastructure Edition is offered — Prusa's commitment to secure supply for professional users.