Anycubic Kobra S1vsPrusa Research MK4S

💰Anycubic Kobra S1 is $580 cheaper (166% less)

📐Anycubic Kobra S1 has 35% more build volume

⚡Anycubic Kobra S1 tops out at 600 mm/s vs 500 mm/s

🏠Only Anycubic Kobra S1 has an enclosure — required for ABS, ASA, PA engineering filaments

Cross-ecosystem comparison: These printers use different software ecosystems. Accessories, filament profiles, and community support are not interchangeable between brands. Consider the total ecosystem cost, not just the printer price.

Anycubic Kobra S1

Buy/Wait:Caution

First-generation product — no release history to base predictions on

Best for: Makers who want an enclosed CoreXY at a prosumer price for PLA, PETG, ABS, and ASA — and prefer the Anycubic ecosystem. For reliable PA or PC printing, consider the Kobra S1 Max or Qidi Q2 which offer active chamber heating.

Full details →

Prusa Research MK4S

Buy/Wait:Upgrade Kit

Late in cycle — but an upgrade kit is available. Existing owners can upgrade without buying new

🔧 Upgrade kit available — from MK4, MK3.5

Best for: Makers who value open-source hardware, community support, long-term repairability, and battle-tested reliability over raw speed or multicolor features.

Full details →

	Anycubic Kobra S1	Prusa Research MK4S
Pricing
Starting Price	★ $349	$929
Print Specs
Tier	Prosumer	Prosumer
Motion	CoreXY	BedSlinger
Build Volume	★ 250 × 250 × 250 mm	250 × 210 × 220 mm
Max Speed	★ 600 mm/s	500 mm/s
Multicolor	❌ No	❌ No
Enclosure	★ ✅	❌
Auto Calibration	✅	✅
Open Source	❌	★ ✅
Upgrade Kit	—	🔧 From MK4, MK3.5
Buy Timing
Released	Feb 11, 2025	Mar 20, 2024
Cycle length	—	~730 days
Cycle advice	Caution	Upgrade Kit
Deals advice	Caution	Buy
Next model	—	Prusa MK5 (Expected 2027)

Quick Winner

Bottom Line

💰Anycubic Kobra S1 saves you $580 — choose it if budget is your primary constraint

🏠Anycubic Kobra S1 is the only choice if you print ABS, ASA, PA, or PC — those materials require an enclosure

🔓Prusa Research MK4S is the pick for open firmware, community mods, and long-term repairability

Materials

Anycubic Kobra S1 only

—

Both

PLAEasy to print, no enclosure needed — everyday parts

PETGTougher, slightly flexible, moisture-resistant

ABSHeat and impact resistant — needs enclosure

ASAUV-stable ABS alternative — outdoor parts, needs enclosure

TPUFlexible rubber-like — phone cases, gaskets, wheels

PANylon — strong and wear-resistant, needs dry storage

Prusa Research MK4S only

PCPolycarbonate — extremely tough, challenging to print

Why buy each?

Anycubic Kobra S1

Enclosed CoreXY at 600 mm/s

The Kobra S1 combines an enclosed build chamber with 600 mm/s CoreXY motion — offering improved heat retention over open-frame printers for ABS and ASA.

Anycubic ecosystem at prosumer price

Brings Anycubic's value-focused approach to the enclosed CoreXY segment — competing with Qidi Q2C and Bambu P2S at a lower price point.

250×250×250 mm build volume

A practical cubic build volume well-suited for functional mechanical parts, enclosures, and prototypes.

Prusa Research MK4S

Upgrade kit available — no need to buy new

MK4 and MK3.5 owners can upgrade to MK4S specs without purchasing a whole new printer. This is Prusa's commitment to owners and is unique in the industry at this level.

Fully open source

Firmware, PCB schematics, hardware designs, and slicing profiles are all published under open licenses. You own the printer completely.

Best community and documentation

Prusa's forum, knowledge base, and repair guides are unmatched. Parts are stocked and available for years after purchase.