Access is difficult.
Hazardous terrain, restricted sites, and hard-to-reach infrastructure make capture costly and repeat visits difficult.
INTELLIGENCE, BEYOND CONTROLLED CONDITIONS.
Intelligence.
In the world.
For the world.
A world model that understands humans, 3D space, and what happens next.
Enter the real world ↗BUILD.→PREDICT.→GROUND.→VERIFY.
ONE SHARED WORLD.
MEASURABLE INTELLIGENCE.
MEASURABLE INTELLIGENCE.
01 / THE VISIONSPACE × TIME × HUMAN UNDERSTANDING
The world doesn’t
follow a script.
Intelligence shouldn’t
need one.
People move. Conditions change.
The next moment is never guaranteed.
FOURDEE WORLD is building a single, shared 4D world model for humans and robots. A model that understands the geometry of a place, the people within it, and how the scene evolves.
A robot must understand what to do when the world changes.
Explore the world model ↗x, y, zUnderstand space
+Geometry, scale, objects.
tAnticipate change
+Motion, dynamics, time.
◎Understand people
=Shape, movement, interaction.
4DIntelligence grounded in reality
A shared foundation for action.
02 / WHERE INTELLIGENCE MATTERSCRITICAL MISSIONS. REAL-WORLD STAKES.
Go where it’s difficult.
Do what matters.
Our focus is the physical economy’s
most demanding environments.
The places where intelligence matters most.
01 / DEFENSE & BORDER SAFETYIntelligence
Intelligence
at the edge.
Difficult terrain. Limited visibility. Conditions that won’t stand still. Our focus: world intelligence for perimeter observation and robotic navigation in uncertain environments.
Terrain understandingPerimeter awarenessAdaptive navigation
Build with us ↗01 — 04A cleaner world
is part of the mission.
Environmental inspection, cleanup, and restoration.
The same intelligence, working for a world worth protecting.
THE REAL-WORLD DATA CHALLENGE
Robotics is not just
a data problem.
Collecting data where intelligence matters is anything but trivial.
Access is limited. Observations are incomplete. The world keeps changing. Our approach builds on sample-efficient, compute-efficient research that learns from sparse, unconstrained observations.
Sparse observationsWorld understanding
Conditions keep changing.
Weather, lighting, geometry, and human movement vary together. Every observation captures only part of the world.
Critical moments are rare.
Consequential events may appear infrequently and can be unsafe or impractical to recreate for a dataset.
Build from evidence. Predict possibilities.
Ground in reality. Verify against constraints.
THE WORLD MODEL / INTERACTIVE EXPLORER
See the scene.
Understand
the possibilities.
Space is only part of the story. A world model connects people and places with how they change over time.
- 01A shared coordinate system
Humans and physical space, modeled together.
- 02Movement with meaning
Shape and motion across a changing scene.
- 03More than one possible future
Explore trajectories, constraints, and uncertainty.
METRIC WORLD / EXPLORER
One world. Shared understanding.Humans and space, in a shared coordinate system.
Drag to orbit · Arrow keys to rotate Illustrative model visualization
03 / THE INTELLIGENCE STACK
Built to understand.
Grounded to act.
Four connected pillars turn a model of the world
into a foundation for grounded robotic action.
01 / WORLD BUILDERBuild a world.
Build a world.
Give it the rules of reality.
Create executable 4D worlds with geometry, dynamics, objects, agents, and physics. A world has to do more than look convincing. It needs scale, causality, and consistency.
CONSTRUCT → EVOLVE → CHECK CONSISTENCY
04 / THE FOUNDATION
Real signals.
Measurable intelligence.
Better world models begin with
a precise understanding of humans
and the spaces around them.
01 / METRIC HUMANSSHAPE + KINEMATICS
Illustrative measurement framework
Understand the human.
Beyond the silhouette.
Research in sub-centimeter human shape and kinematics — connecting physical form with movement.
1,240+hours of capture
10M+images
1M+videos
02 / METRIC SPACESGEOMETRY + SCALE
Scene reconstruction · FOURDEE WORLDKnow the space.
At real-world scale.
A mathematically precise, 1:1 coordinate framework for physics and navigation. Capture, reconstruct, and verify.
51+spaces captured
1:1metric framework
50MPreconstruction detail
05 / ABOUT USRESEARCH WITH THE WORLD LEFT IN.
The real world
is our
starting point.
We are builders who know how to make things work in unconstrained environments.
Our work begins with the world as it is: sparse observations, imperfect inputs, moving people, and spaces we don’t control. Learning intelligence from these conditions has always been central to our work.
That experience shapes FOURDEE WORLD. We connect rigorous research with the physical understanding robots need in changing environments.
LEADERSHIP
Aayush Bansal
Our team is led by Aayush Bansal, whose doctoral research at Carnegie Mellon University’s Robotics Institute explored learning the 4D audiovisual world from sparse, unconstrained real-world samples.
His work spans robotics, generative AI, and spatial AI, from robot localization to image and video synthesis and 3D/4D reconstruction. He develops sample-efficient and compute-efficient approaches that learn from sparse observations, with a consistent focus on making research work in the real world.
Explore his background ↗Making robots truly capable where intelligence matters.
THE NEXT FRONTIER IS THE REAL WORLD.
You can engineer a task.
You can’t script the world.
A tightly scoped task can make an impressive demo. We’re building world intelligence for the harder challenge: environments that change, situations that surprise, and decisions that matter.
Start a conversation ↗