Mantis
The autonomous robot automating construction
Mantis is All3's autonomous construction robot that transforms how buildings are made. Engineered with heavy-duty capability, adaptive tooling, and AI-powered execution, it handles installation, fastening, finishing and inspection across the full build process. Fully electric and modular, Mantis operates autonomously on urban construction sites, removing reliance on scarce skilled manual labour.
Key Features:
- One robot, multiple roles: Reconfigurable tools allow Mantis to install, fasten, finish, and inspect without manual intervention.
- Embodied AI: Trained specifically on All3's building logic, Mantis autonomously executes workflows with precision and site awareness.
- Heavy-duty performance: A 100kg+ payload and 4m telescopic reach make it equally effective for structural and interior elements.
- Precision placement: Millimetre-level accuracy using our plug-and-play connectors and positioners for instant alignment on site.
Napo Montano, Head of Mobile Robotics
“We're not building a universal robot - we're building the robotic solution that construction needs right now. Mantis addresses one high-impact problem: how to make custom, high-quality buildings affordable and scalable through tightly integrated automation”
How Mantis works
Built for real construction sites
Construction sites aren't flat, predictable environments. Mantis is engineered to operate in real-world conditions.
- Navigates confined spaces: Autonomously reconfigures leg stance to fit through standard doorways and operate in tight site zones
- Maintains stability: Designed for maximum stability across uneven surfaces, staircases, and early-stage assemblies - even with heavy loads
- Works indoors and outdoors: Operates across the full site, from ground-level slabs to multi-storey interiors
Modular architecture
Mantis is built from three integrated modules that allow it to adapt across the build process:
- Locomotion: Four-legged body designed for unstructured sites and adaptive terrain navigation
- Payload: Swappable modules configured for different construction phases and load requirements
- Tools: Interchangeable tool system - from fastening and drilling to finishing and inspection - all with robotic precision
Engineered for heavy lifting
Carrying 100kg+ loads with precision across uneven terrain requires purpose-built engineering:
- Reinforced aluminium structure: Custom-machined high-strength alloys with structural reinforcements and finite-element optimisation for dynamic loads
- High-torque electric motors: Purpose-designed actuators delivering consistent performance under extreme conditions
- Real-time control architecture: Multi-layered system synchronising joint torque, balance and contact dynamics at millisecond precision
- Industrial-grade electronics: Robust power distribution and control systems meeting industrial automation standards
Plug-and-play assembly
Mantis doesn't just place components - it assembles buildings using All3's integrated connector and positioner system.
- Integrated connectors: Each building element arrives with engineered joints, self-aligning positioners, and pre-installed MEP systems.
- Performance: On site, components snap into place in under a minute - no skilled carpentry, no manual adjustments required - allowing a fleet of Mantis robots to assemble a seven-storey, 5,000m² building in three months.
- Compliance: All connectors and positioners are designed in-house and compliant with applicable structural, fire safety, vibration, and sound isolation regulations.
Beams with integrated plug-and-play connectors
Benefits of Mantis-powered construction
On-site labour shortages, rising costs, and human error have kept construction productivity stagnant for decades. Mantis changes that by bringing industrial automation to the construction site.
- Cuts project timelines by up to 50% - automated assembly operates continuously without shift limitations
- Delivers precise, consistent quality - robotic execution eliminates human error and rework
- Scales output without scaling workforce - fleet deployment increases capacity without labour constraints
Mantis is not a general-purpose robot. It is purpose-built for construction, enabling custom, sustainable buildings to be delivered at the cost and speed of mass production.
The All3 Mantis autonomous construction robot
The ecosystem that powers mantis
All3 has re-engineered every step of construction into one integrated technology-driven process to create the ecosystem that Mantis needs to succeed. Integrated technology
