1X Technologies

How 1X NEO works

1X NEO runs Redwood AI on top of its own sensing and whole-body control — the parts the 6 public sources on this page actually name.

NEO understands you through a built-in language assistant, uses a dedicated robot-body model called Redwood to move and do chores, and separately researches a 'world model' that can imagine and evaluate outcomes.

09 named models · 6 sources · updated 9 Aug 2026

1X NEO humanoid robot
Image: Eli Russell Linnetz / 1X

What 1X NEO uses to sense, think, move and learn

Senses

Turns cameras, audio and touch into one picture

  • Model not named

Understands

Works out what the job is

  • Built-in LLM + Redwood task behaviours

Predicts

Anticipates what happens next

  • 1X World Model (1XWM)
  • World Model Lab

Acts

Chooses the movement and the grasp

  • Redwood mobile manipulation
  • Redwood AI
  • Redwood whole-body

Controls

Keeps the body balanced while it works

  • Redwood whole-body

Learns

Improves the models between runs

  • Redwood training from EVE
  • NEO data
  • World Model Lab
  • Expert Mode learning

What it learns feeds back into the models before the next run.

Greyed cards are parts the vendor hasn't named a model for.

01

How the robot is built to work

When it does not know how to do something, a remote human expert can step in.

Technical read

A built-in LLM handles language, memory and intent; Redwood AI is the vision-language-action policy for mobile manipulation and whole-body control; 1X World Model / World Model Lab is a distinct predictive and self-learning research direction; Expert Mode provides human tele-supervision for unfamiliar tasks.

  • Redwood VLA policy
  • Separate world-model direction
  • Human-supervised Expert Mode
14
System parts on the public record

9 confirmed as running on the robot

13
Parts with a public model name

0 supplied by a partner

06
Primary architecture sources

14 open questions left unanswered

NEO is one of the clearest cases where policy and world-model thinking coexist. Redwood is the deployable generalist robot model; 1X World Model / World Model Lab is the predictive/evaluation/self-learning direction, not a confirmed live runtime component. Expert Mode means some tasks can be remotely supervised by a human — that is not autonomy.

02

How it senses, reasons and moves

Three-level hierarchy

A slow reasoning layer drives a faster policy, which drives the control loop.

See, hear and sense balance

It sees in stereo, hears voices and tracks its own body movement.

Model not named

Onboard computer

A powerful onboard computer runs the models on the robot.

  • 1X NEO Cortex (Nvidia Jetson Thor)

Physically safer body

It is built to be soft and safer if it bumps into a person.

Model not named

Run it like an appliance

The robot is operated like a home appliance with an app and a helper mode.

Model not named

Talk and remember

You can talk to NEO, and it uses memory and what it sees to understand and respond.

Model not named

Decide the task

The language brain works out what you mean, and Redwood turns it into a household task.

  • Built-in LLM + Redwood task behaviours

Human remote helper

If the robot does not know how to do a chore, a human operator can step in and guide it remotely with owner permission. This is supervised human assistance, not autonomy.

  • 1X Expert Mode

Choose body actions

Given what it sees and what you ask, Redwood chooses the body's actions.

  • Redwood AI

Move around the home

It can move around a home as part of doing a chore.

  • Redwood mobile manipulation

Grasp and handle objects

The hand story is strong but version-specific: the official product page and a newer hand article describe different hands.

Model not named

Coordinate the whole body

It coordinates walking, leaning and bracing together with using its arms, not just one at a time.

  • Redwood whole-body

Physical muscles

Its muscles use tendons and cables so it can be lighter and gentler around people.

Model not named

Feeds back into the models

Around the stack

Named on the public record, but not part of the runtime chain above.

Imagine what may happen

Separately from the robot's day-to-day skill model, 1X is building a system that can imagine what a successful action should look like and use that to evaluate or learn new behaviour.

  • 1X World Model (1XWM)
  • World Model Lab

Learn from experience

Every robot interaction, including teleoperated help, can become future training data if captured and approved. This happens off the robot, not during live use.

  • Redwood training from EVE
  • NEO data
  • World Model Lab
  • Expert Mode learning

03

What sensors and hardware it has

1X NEO — Tendon-drive machinery close-up
Tendon-drive machinery close-up · Eli Russell Linnetz / 1X

Parts sit on the body only where the public record places them.

Vision and audio

02
  • Dual 8.85MP 90Hz stereo fisheye cameras.

    Two high-speed wide eyes for depth and scene understanding.

    Confirmed on this robot · Head · 1 source

  • 4 beamforming microphones; speakers in pelvis/chest.

    It can hear speech and speak or play audio.

    Confirmed on this robot · 1 source

Body position and balance

03
  • Linkwise differential IMUs across the body.

    It tracks its own body movement and balance.

    Confirmed on this robot · Across the robot · 1 source

  • Degrees of freedom: hands 22x2, arms 7x2, neck 3, spine 2, legs 6x2.

    A detailed body-joint breakdown is public.

    Confirmed on this robot · Across the robot · 1 source

    Still open: The hand article may supersede some of these joint details.

  • 5'6" (168 cm) height; 66 lbs (30 kg) weight.

    Human-sized but much lighter than most industrial humanoids.

    Confirmed on this robot · Across the robot · 1 source

Hands and end effectors

01
  • Product page: 22 DoF per hand. Separate 'NEO's Hands' article claims a breakthrough 25-DoF tendon-driven hand — treat as conflicting/evolving generation detail.

    The hand story is strong but version-specific across two official sources.

    Conflicting public disclosures · Hands · 2 sources

    Still open: Which hand generation ships on which NEO configuration?

Joints and actuators

02
  • Patented Tendon Drive; low-inertia, high torque-density motors with torque accuracy and backdrivability specs.

    Its muscles use tendons and cables so it can be lighter and safer around people.

    Confirmed on this robot · Across the robot · 1 source

  • Lift 154 lbs; carry 55 lbs; arm payload 18 lbs.

    Strong for its weight, though this is a static spec, not proof of chore capability.

    Confirmed on this robot · 1 source

    Still open: Distinguish static lift specs from actual demonstrated chore capability.

Compute and connectivity

01
  • 1X NEO Cortex onboard compute module (Nvidia Jetson Thor), up to 2070 FP4 TFLOPS listed.

    A powerful onboard computer runs NEO's AI models.

    Confirmed on this robot · 1 source

Battery and runtime

01
  • 842 Wh battery; ~4 hour runtime; quick charge adds roughly 6 minutes of runtime per minute charged.

    Designed for several hours of home work before it needs to recharge.

    Confirmed on this robot · 1 source

Safety hardware

02
  • Hands rated IP68, body rated IP44; 22 dB audible noise.

    Quiet operation, and hands that can handle wet tasks better than the rest of the body.

    Confirmed on this robot · 1 source

  • Soft custom lattice polymer body; no pinch points; Head Injury Criterion (HIC) below 250.

    Built to be softer and safer if it bumps into a person.

    Confirmed on this robot · 1 source

    Still open: Independent certification is not public.

04

How it does one real job

Vendor-stated scenario

Fetch a mug from the kitchen table and place it on the counter

This is a vendor-described scenario, not an independently verified deployment log. World-model use and Expert Mode escalation are described as possibilities, not confirmed to occur on every run.

6 moments · uses 6 of 6 parts of the system

  • 01

    Understand the request

    NEO hears the request and turns it into a task goal.

    Technical detail

    The LLM/audio layer recognises the request and converts it into a task goal for the planner.

    • Senses
    • Understands
    • Predicts
    • Acts
    • Controls
    • Learns
    • Built-in LLM + Redwood task behaviours

    Confirmed on this robot · 1 source

  • 02

    Find the mug

    It looks around the kitchen and identifies the table and the mug.

    Technical detail

    Visual intelligence and Redwood identify the target object and its location from stereo camera input.

    • Senses
    • Understands
    • Predicts
    • Acts
    • Controls
    • Learns
    • Redwood AI

    Confirmed on this robot · 2 sources

  • 03

    Walk to the table

    It navigates across the kitchen while avoiding obstacles.

    Technical detail

    Redwood's mobile-manipulation policy coordinates locomotion to the table.

    Home robustness across varied layouts still needs field proof.

    • Senses
    • Understands
    • Predicts
    • Acts
    • Controls
    • Learns
    • Redwood mobile manipulation
    • Redwood whole-body

    Confirmed on this robot · 1 source

  • 04

    Reach and grasp gently

    It reaches out and picks up the mug with compliant fingers.

    Technical detail

    Redwood outputs full-body manipulation actions; tendon-driven hands close under compliant control.

    Exact hand generation and tactile detail should be versioned, given conflicting hand disclosures.

    • Senses
    • Understands
    • Predicts
    • Acts
    • Controls
    • Learns
    • Redwood AI

    Confirmed on this robot · 2 sources

  • 05

    Carry to the counter

    It walks while keeping the mug stable.

    Technical detail

    Locomotion and manipulation are coordinated so the carried object stays balanced.

    • Senses
    • Understands
    • Predicts
    • Acts
    • Controls
    • Learns
    • Redwood whole-body

    Confirmed on this robot · 2 sources

  • 06

    Place the mug, or escalate to a human if stuck

    It places the mug and may retain context in memory; if it cannot complete an unfamiliar step, a remote 1X Expert can take over with owner permission. Separately, 1X states the world model can be used to evaluate or improve policies, but this is not confirmed to run live on every action.

    Technical detail

    The robot places the mug and updates memory if enabled. Expert Mode provides tele-supervised assistance for unfamiliar tasks, distinct from autonomous execution. World-model self-learning is a separate offline/direction-level process for evaluating and improving future policies.

    Do not assume every fetch action invokes the world model live, and do not count Expert Mode assistance as autonomous capability.

    • Senses
    • Understands
    • Predicts
    • Acts
    • Controls
    • Learns
    • 1X World Model (1XWM)
    • World Model Lab
    • Redwood training from EVE
    • NEO data
    • Expert Mode learning

    Confirmed for the robot family · 3 sources

Parts are lit where the vendor's own description puts them to work. Unlit parts still run on the robot; they are simply not what this job turns on.

05

How it learns and improves

4 of 4 stations on the public record · 4 named training models

  1. 01

    The robot works

    Runs the parts of the system that later receive updates (3)

  2. 02

    Experience is captured

    Robot logs · Teleop data · Human videos · Simulation / on-policy data

  3. 03

    Learn from experience

    Confirmed on this robot

  4. 04

    Updates go back on the robot

    Model improvements · New skills

Station 04 returns to station 01 — the loop repeats.

Every robot interaction, including teleoperated help, can become future training data if captured and approved. This happens off the robot, not during live use.

Technical detail

1X describes training from teleoperated/autonomous episodes and building world-model pretraining/self-learning data loops that feed Redwood and the world-model direction.

Confirmed on this robot

  • Redwood training from EVE
  • NEO data
  • World Model Lab
  • Expert Mode learning

How user data is retained/used and opt-outs affect learning is important.

What the updates land on

  • Choose body actionsActs
  • Imagine what may happenPredicts
  • Learn from experienceLearns

06

What the vendor has shared

24
Vendor-confirmed

Confirmed on this robot · Confirmed for the robot family

02
Reported or contested

Conflicting public disclosures

A map of the public record, not a verdict. A silent line means the vendor has not said — it never moves the ranking.

What each band means
  • Vendor-confirmed

    The vendor publicly describes this for the exact robot named on this page.

  • Reported or contested

    Public sources disagree; we show the conflict rather than pick one.

Still open · 03

Which NEO hand generation ships?

The product page states 22x2 DoF hands; a separate article describes a 25-DoF hand breakthrough. 1X has not reconciled which ships on which configuration.

Why it matters

Hand DoF and tactile capability materially affect manipulation quality.

Conflicting public disclosures

How much is autonomous versus Expert Mode?

1X openly uses Expert Mode for unknown or complex chores; the autonomous/supervised split for any given task is not quantified.

Why it matters

Autonomy claims must be separated from human remote operation.

Confirmed on this robot

Is the world model live in policy execution?

1X discloses several world-model research uses (prediction, evaluation, self-learning), but the exact production runtime relationship to Redwood is evolving and not confirmed as NEO's live action path.

Why it matters

The world-model architecture is significant but should not be over-attributed to NEO's day-to-day runtime.

Confirmed for the robot family

07

Technical details

The record

Every row is the public position. Undisclosed rows stay in the list.

06 of 06 rows have a public answer