Prusa Core One: Specs, Price and Who It Suits

What Prusa announced

Josef Prusa announced the CORE One on November 19, 2024, showing it at the Formnext trade show in Frankfurt. He described it as a fully enclosed CoreXY printer with active chamber temperature control, built around Prusa's Nextruder and a load cell sensor for the first layer. Shipping of assembled units was planned for January 2025.

Prusa said the CORE One is designed to sit beside the MK4S, not replace it, and that it would keep making and supporting the MK4S.

Prusa CORE One specifications

The table uses the technical parameters on Prusa's current product page, which now covers the CORE One+ (Gen 2). The announcement post confirms the same build volume and 55 C chamber for the original.

Price

At the November 2024 announcement Prusa gave these prices, all excluding VAT unless stated.

The current page is different. Prusa now sells the CORE One+ (Gen 2). On 2026-10-10 its dollar-priced page showed the assembly kit from $925 and the assembled printer at $1,202.78, with 'in stock' shown. The page's structured data listed the kit at £929 for a UK viewer. Check which version and region you are buying from.

What is new compared with the MK4S

These comparisons are Prusa's own claims from the announcement.

• Enclosed CoreXY instead of an open-frame bed slinger. Our CoreXY vs bed slinger guide explains the difference.
• 30 percent more print volume, in a body Prusa says needs 30 percent less space than an MK4S.
• Chamber to 55 C with fans that Prusa says keep PLA and PETG cool enough to print with the door closed.
• Print time cut by 15 to 20 percent against the MK4S, depending on the project, with no special high-speed filament needed (Prusa's claim).

The Gen 2 changes listed on the product page include a redesigned heatbed mount that removes a separate heat-soak wait for beds up to 85 C, GT1.5 belts to make repeating surface patterns finer, and an integrated nozzle wiper.

Who it suits (opinion from the specs)

This is our reading of the specs, not experience with the machine.

• Likely to suit: people who want one dependable enclosed printer for PLA, PETG and tougher materials, value repairability and open source firmware, and will pay more than for a budget machine. A kit also appeals if you want to learn how it goes together; Prusa quotes about 12 hours to build one.
• Less suited: buyers who want the lowest price or built-in multi-color. Multi-material is an add-on here.
• Software: it uses PrusaSlicer; see PrusaSlicer for beginners.

Compare cost against alternatives in how much a 3D printer costs and enclosed vs open frame printers.

What we would test

• Print time against the 15 to 20 percent claim on identical models.
• Whether PLA and PETG really print cleanly with the door closed.
• Chamber temperature, noise and measured power draw.
• Kit assembly time and difficulty versus the stated 12 hours.
• First layer reliability with the load cell on different build sheets.