Klipper vs Marlin in 2026: Should You Switch?

Marlin runs your printer on one board. Klipper splits the work between a host computer and the board. That one design difference drives every trade-off in this comparison, including speed, tuning depth, cost, and how much you will tinker.

Both firmwares are mature, and both can produce excellent prints. The real question is whether your printer, your goals, and your patience justify a migration.

Quick Takeaways

• Switch to Klipper if you want high acceleration (5,000-20,000 mm/s²), fast tuning through a web UI, or a CoreXY/Voron-style machine.
• Stay on Marlin if your printer is a stable, reliable bed slinger and you want zero extra hardware.
• Klipper needs a host (Raspberry Pi 4/5 or similar, roughly $35-80), plus an accelerometer for best results ($10-25).
• Marlin has closed much of the gap with Linear Advance and Input Shaping, but tuning is slower because every change means a reflash.

How Klipper and Marlin Actually Differ

Marlin: Everything on the Mainboard

Marlin is firmware compiled for your printer’s microcontroller. The board parses G-code, plans motion, reads thermistors, and drives steppers. You configure it in Configuration.h and Configuration_adv.h, compile, and flash.

Marlin’s strengths come from that simplicity:

• No extra hardware. Plug in power, load an SD card, print.
• Standalone operation. The LCD works with no network or host.
• Huge board and printer support. Thousands of community configs exist.
• Predictable behavior. Fewer moving parts means fewer failure points.

Klipper: A Host Does the Math

Klipper moves motion planning to a host computer, usually a Raspberry Pi. The MCU only executes precisely timed step commands. Configuration lives in a plain-text printer.cfg, and changes apply after a firmware restart.

Because a full computer handles the heavy math, Klipper can run:

• Faster step generation with fewer timing artifacts.
• Advanced kinematics such as CoreXY, delta, and CoreXZ with less overhead.
• Resonance compensation using real accelerometer data.
• Web interfaces such as Mainsail and Fluidd via Moonraker.

Klipper is firmware plus a software stack. You manage a Linux host, a web UI, and a config file, so expect to learn some basic Linux commands.

Performance: Speed, Acceleration, and Print Quality

Speed gets the headlines, but acceleration and resonance control decide actual print time and surface quality.

Pressure Control: Pressure Advance vs Linear Advance

Both firmwares model extruder pressure to prevent bulging corners and thin gaps after direction changes.

Klipper pressure advance in printer.cfg:

[extruder]
pressure_advance: 0.045
pressure_advance_smooth_time: 0.040

Run a tuning tower to find your value:

SET_VELOCITY_LIMIT SQUARE_CORNER_VELOCITY=1 ACCEL=500
TUNING_TOWER COMMAND=SET_PRESSURE_ADVANCE PARAMETER=ADVANCE START=0 FACTOR=.005

Marlin Linear Advance in Configuration_adv.h:

#define LIN_ADVANCE
#if ENABLED(LIN_ADVANCE)
  #define ADVANCE_K 0.05
#endif

You can also adjust it at runtime with M900 K0.05.

Input Shaping: Where Klipper Still Leads

Input shaping cancels ringing (ghosting) caused by frame resonance. Klipper has offered it for years, with automated measurement. Marlin added input shaping in the 2.1.x line, but setup is more manual.

Klipper’s workflow with an ADXL345 accelerometer:

[adxl345]
cs_pin: rpi:None
spi_bus: spidev0.3

[resonance_tester]
accel_chip: adxl345
probe_points: 100, 100, 20

[input_shaper]
shaper_freq_x: 55.2
shaper_type_x: mzv
shaper_freq_y: 41.8
shaper_type_y: mzv

Then run:

SHAPER_CALIBRATE
SAVE_CONFIG

Klipper measures your printer and recommends shaper types and frequencies. Marlin users typically measure ringing from a test print or an external tool, then set values manually:

M593 X F55.2 D0.15
M593 Y F41.8 D0.15

Both work. Klipper makes it faster, and faster tuning means more people actually do it.

Real-World Speed Numbers

A tuned Klipper CoreXY printer can hold 5,000-10,000 mm/s² acceleration with clean surfaces. A tuned Marlin printer on the same frame can often reach 3,000-5,000 mm/s². Your hardware limits both. A loose belt or a flexing gantry will cap you no matter which firmware you run.

Reality check: on stock bed slingers, the heavy moving bed limits acceleration. Switching firmware will not change that. Gains are largest on lightweight CoreXY and gantry designs.

Setup and Ongoing Effort

What You Need for Klipper

A typical Klipper migration looks like this:

1. Flash the host OS (Raspberry Pi OS Lite) and enable SSH.
2. Install Klipper, Moonraker, and Mainsail with KIAUH.
3. Build and flash Klipper firmware to the printer’s MCU using make menuconfig.
4. Write printer.cfg from a board-specific template.
5. Verify endstops, heaters, and motor directions before printing.
6. Calibrate PID, pressure advance, and input shaping.

Budget 2-4 hours for a first migration. Subsequent changes take seconds.

What You Need for Marlin

You need Visual Studio Code with PlatformIO (or the Arduino IDE), your board’s pin configuration, and the patience to edit and flash. Updates mean recompiling. A bad config can mean reflashing through USB or SD.

Ongoing Maintenance

Hardware Compatibility

Most 32-bit boards run both firmwares. Check your board before committing.

• Boards that work well with Klipper: BTT SKR series, Octopus, Manta, and most STM32-based boards.
• Challenging cases: Old 8-bit boards (Arduino Mega + RAMPS) technically work, but you lose the main benefit.
• Manufacturer-locked printers: Some printers ship with proprietary or locked bootloaders. Check community guides before buying a host.

Many newer consumer printers ship with Klipper-based firmware out of the box, and some vendors maintain their own Marlin forks. If you own one, your manufacturer’s stock firmware may already be what you need.

Real-World Use Cases

When Klipper Wins

• Voron and RatRig builds. These machines are designed around Klipper features.
• Print farms. Remote management and config-as-text make fleets easy to standardize and back up.
• Speed printing. Large functional parts at 200-500 mm/s with tuned acceleration.
• Experimenting. Macros, filament sensors, bed meshes, and multi-tool setups are easy to script.

Example macro for a clean print start:

[gcode_macro START_PRINT]
gcode:
  {% set BED = params.BED|default(60)|float %}
  {% set EXTRUDER = params.EXTRUDER|default(210)|float %}
  M140 S{BED}
  M104 S{EXTRUDER - 50}
  G28
  M190 S{BED}
  BED_MESH_CALIBRATE
  M109 S{EXTRUDER}
  G92 E0
  G1 X5 Y10 Z0.3 F5000
  G1 X5 Y150 E15 F1500

When Marlin Wins

• Reliable workhorse printers. An Ender-class printer that already makes good parts.
• Offline use. Hobbyists who print from SD cards without a network.
• Education and makerspaces. Fewer components, less to break.
• Resource-limited setups. No host to buy, power, or secure.

Cost of Switching

The Verdict: Should You Switch?

Switch to Klipper if:

• You print on a CoreXY or lightweight gantry machine.
• You chase print speed, ringing reduction, or heavy customization.
• You manage several printers.
• You are comfortable with Linux basics.

Stay on Marlin if:

• Your printer works well and you only print occasionally.
• You prefer a standalone setup with no host.
• Your mechanical hardware, not the firmware, limits your quality.

Fix hardware first if your prints show wobble, loose belts, or an under-tuned extruder. No firmware compensates for a wobbly frame.

FAQ

Is Klipper faster than Marlin?

Yes, in practice, on suitable hardware. Klipper’s host-based planning and easy input shaping let lightweight machines run higher accelerations cleanly. On heavy-bed printers, the mechanics limit speed more than the firmware.

Does Klipper need a Raspberry Pi?

It needs a Linux host, and a Raspberry Pi is the most common choice. Alternatives include Orange Pi, old mini PCs, and printer-integrated hosts. The host runs Klipper, Moonraker, and your web interface.

Can I switch back to Marlin from Klipper?

Yes. Klipper does not change your hardware. Compile Marlin with your board’s configuration, flash it to the MCU, and you are back. Keep a backup of your original Marlin config before you switch.

Is Marlin outdated in 2026?

No. Marlin is actively maintained, supports modern features like Linear Advance and Input Shaping, and remains the default on many printers. It is the simpler choice, not the obsolete one.