ArduPilot vs 
PX4
ArduPilot vs PX4 compared for 2026 — features, license, ease of use, performance and which one to choose. Autopilot for drones, rovers and boats vs The autopilot behind most commercial drones.
Updated regularly · curated by OpenSourceAI.tech
ArduPilot vs PX4 at a glance
| Spec | ArduPilot | PX4 |
|---|---|---|
| Category | Robotics & embodied AI | Robotics & embodied AI |
| Type | Autopilot firmware | Drone autopilot |
| License | GPL-3.0 | BSD-3-Clause |
| Runs locally | Yes | Yes |
| Primary language | C++ | C++ |
| Ease of use | Advanced | Advanced |
| Best for | anything autonomous that moves — in the air, on the ground or on water | building a drone product rather than a hobby project |
| GitHub stars | 15.5k | 12.1k |
How ArduPilot and PX4 score
| Criterion | ArduPilot | PX4 |
|---|---|---|
| Popularity | 3.5 | 3.0 |
| Maintenance | 5.0 | 5.0 |
| Ease of use | 2.5 | 2.5 |
| Privacy | 5.0 | 5.0 |
| License freedom | 3.5 | 5.0 |
Scores are computed automatically from public signals — GitHub stars (popularity), recent commit activity (maintenance), license type (freedom), local-first design (privacy) and onboarding complexity (ease of use). Indicative, not a verdict.
What each one is
ArduPilot
ArduPilot is the autopilot firmware flying a large share of the world's open drones, plus ground rovers, boats and submarines.
- Supports aircraft, rovers, boats and submarines
- Enormous hardware compatibility
- Two decades of field testing
PX4
PX4 is the flight control stack used across research and industry, with a clean architecture and a strong simulation story.
- Modular architecture, easy to extend
- Excellent simulation and testing tooling
- Strong industrial adoption
Key differences
ArduPilot is autopilot firmware, while PX4 is drone autopilot. Their licenses differ (GPL-3.0 vs BSD-3-Clause), which matters if you ship a commercial product. In short, ArduPilot fits anything autonomous that moves — in the air, on the ground or on water, and PX4 fits building a drone product rather than a hobby project.
Which should you choose?
Choose ArduPilot for anything autonomous that moves — in the air, on the ground or on water. Choose PX4 for building a drone product rather than a hobby project.
There is rarely one winner — many setups use both. The right pick depends on your hardware, your team's skills, and whether you value simplicity or control.
Frequently asked questions
Is ArduPilot or PX4 easier to use?
Both sit at a similar level (Advanced). Your choice should come down to fit rather than difficulty.
Are ArduPilot and PX4 free?
ArduPilot is free and open source (GPL-3.0), and PX4 is free and open source (BSD-3-Clause). Neither charges for the core software.
Can I run ArduPilot and PX4 locally?
ArduPilot: yes · PX4: yes. Both can be used without sending your data to a third-party cloud where their setup allows.
ArduPilot vs PX4 — which should I pick in 2026?
Choose ArduPilot for anything autonomous that moves — in the air, on the ground or on water. Choose PX4 for building a drone product rather than a hobby project.
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