README.md

# World Models

> **World Models** is an independent Hugging Face organization focused on predictive world modeling, World Foundation Models, World Action Models, interactive simulation, robotics, Physical AI, planning, control and the infrastructure needed to understand how intelligent systems model and act in dynamic environments.

World models sit at the intersection of **prediction, simulation, representation, planning and action**.

They are increasingly relevant wherever an AI system must do more than classify or generate isolated outputs. A world model attempts to represent how an environment behaves, how it changes over time, how actions influence future states, and how an intelligent system can use those predictions to plan or control behavior.

This organization is designed as a structured technical reference for the world-model ecosystem.

---

## Core idea

A simplified world-model loop can be written as:

```text
OBSERVATION
    ↓
STATE REPRESENTATION
    ↓
WORLD MODEL
    ↓
PREDICT FUTURE STATES
    ↓
EVALUATE POSSIBLE ACTIONS
    ↓
SELECT ACTION
    ↓
ENVIRONMENT CHANGES
    ↓
NEW OBSERVATION
```

In many systems, the loop is not purely symbolic or purely visual.

A modern world model may combine:

```text
video
images
language
proprioception
robot state
actions
latent representations
spatial context
temporal context
memory
reward
value estimates
```

The exact architecture differs by model family.

---

# Why World Models Matter

Language models predict tokens.

World models aim to predict, represent or simulate **how the world evolves**.

That shift matters because many advanced AI systems require:

- persistent state
- temporal understanding
- physical consistency
- causal structure
- spatial reasoning
- action conditioning
- planning
- simulation
- long-horizon prediction
- control
- interaction with real or simulated environments

This makes world models highly relevant to:

- robotics
- autonomous systems
- Physical AI
- embodied agents
- simulation
- video generation
- interactive environments
- reinforcement learning
- model-based control
- self-driving systems
- digital twins
- synthetic data
- planning systems
- multi-agent environments

---

# What Is a World Model?

A **world model** is a model that learns or approximates the dynamics of an environment.

At a high level:

```text
current state + optional action
        ↓
world model
        ↓
predicted next state
```

A more general formulation is:

```text
P(s[t+1] | s[t], a[t], context)
```

where:

- `s[t]` = current state
- `a[t]` = current action
- `context` = additional information such as language, memory, goals or environment state
- `s[t+1]` = predicted future state

Not all world models are explicitly action-conditioned.

Some learn predictive representations without directly receiving actions.

Others generate full video rollouts conditioned on robot control sequences.

Others integrate policy, value and future-state prediction into one architecture.

---

# World Models Are Not One Single Model Class

The term **world model** now spans multiple technical categories.

The most important distinction is that world-model systems should not be treated as one homogeneous class.

---

## 1. World Foundation Models

A **World Foundation Model** aims to provide a reusable foundation for world understanding, world generation or future-state prediction.

Typical characteristics:

- broad training data
- multimodal inputs
- video generation or world prediction
- adaptation to multiple downstream tasks
- Physical AI relevance
- simulation capability
- synthetic-data generation

Conceptually:

```text
large-scale world data
        ↓
WORLD FOUNDATION MODEL
        ↓
robotics
simulation
planning
autonomy
synthetic data
physical AI
```

World Foundation Models can play a role similar to language foundation models, but for dynamic environments.

---

## 2. World Action Models

A **World Action Model** links world prediction with actions.

Instead of only estimating what may happen next, the model explicitly represents the effect of possible actions.

A simplified formulation:

```text
current state + candidate action
        ↓
WORLD ACTION MODEL
        ↓
predicted future state
```

Some systems additionally predict:

```text
future state
action
value
reward
success probability
```

World Action Models are particularly important for robotics, planning and control.

---

## 3. Interactive World Models

An **Interactive World Model** is designed for repeated interaction.

It can update its predictions as new actions are applied.

```text
state₀
  ↓ action₀
state₁
  ↓ action₁
state₂
  ↓ action₂
state₃
```

This creates a learned simulation loop.

Interactive world models may be used for:

- robot control
- real-time simulation
- training environments
- game-like environments
- model-based planning
- human-in-the-loop interaction
- counterfactual testing

---

## 4. Planning World Models

A **Planning World Model** is explicitly used to evaluate candidate future trajectories.

Example:

```text
candidate action A
        ↓
predicted future A

candidate action B
        ↓
predicted future B

candidate action C
        ↓
predicted future C

        ↓

compare futures

        ↓

select action
```

This enables model-based planning.

A planner can test actions inside a learned predictive environment before executing them in the real world.

---

## 5. Predictive Representation Models

Not every world model generates pixels.

Some models learn predictive latent representations.

Instead of predicting a full image:

```text
pixels → future pixels
```

they may predict:

```text
latent state → future latent state
```

This can be much more efficient.

Latent predictive systems can support:

- representation learning
- physical understanding
- planning
- downstream control
- future-state estimation
- action-conditioned adaptation

---

## 6. Video World Models

Some world models are based on generative video architectures.

Their objective is to model how visual scenes evolve over time.

Potential inputs include:

- image
- video
- text
- camera movement
- action sequences
- robot state
- spatial conditions

Potential outputs include:

- next frame
- future frames
- long video rollout
- multi-view video
- action-conditioned trajectory

Important distinction:

> A video generator is not automatically a world model.

A strong world model should represent meaningful environmental dynamics rather than only produce plausible visual sequences.

---

# World Models and Physical AI

**Physical AI** refers broadly to intelligent systems that perceive, reason about and act in the physical world.

World models can become a central infrastructure layer for Physical AI.

```text
SENSORS
   ↓
PERCEPTION
   ↓
WORLD MODEL
   ↓
PLANNING
   ↓
CONTROL
   ↓
ACTUATORS
   ↓
PHYSICAL WORLD
```

This connects world modeling directly to:

- robotics
- humanoids
- autonomous vehicles
- drones
- warehouse automation
- industrial automation
- manipulation
- navigation
- mobile robots
- surgical robotics
- embodied agents

A world model can provide the internal predictive layer between perception and action.

---

# World Models and Robotics

Robotics is one of the clearest application areas for world models.

A robot must understand:

- what objects exist
- where they are
- how they may move
- what will happen after an action
- whether a trajectory is feasible
- whether a goal is progressing
- when to retry
- when to stop
- when to ask for human input

A simplified robotics stack:

```text
CAMERAS / SENSORS
        ↓
PERCEPTION
        ↓
WORLD STATE
        ↓
WORLD MODEL
        ↓
PLANNING
        ↓
POLICY / CONTROL
        ↓
ROBOT ACTION
```

World models can reduce dependence on expensive real-world trial and error by enabling learned simulation.

---

# World Models and Simulation

Traditional simulation relies on explicit rules and physics engines.

Learned world models offer another approach:

```text
observed trajectories
        ↓
learned dynamics
        ↓
simulated future
```

This can complement classical simulators.

Potential advantages:

- fast approximate simulation
- realistic appearance
- learned environment complexity
- adaptation to real-world data
- multimodal conditioning
- scalable synthetic trajectories

Potential limitations:

- hallucinated dynamics
- physical inconsistency
- compounding rollout errors
- domain shift
- poor long-horizon stability
- weak rare-event coverage

The most interesting future systems may combine:

```text
physics simulation
+
learned world models
+
real-world data
+
synthetic data
```

---

# World Models and Planning

Planning requires evaluating futures before acting.

A world model can serve as a predictive engine for planning.

```text
GOAL
 ↓
candidate actions
 ↓
world-model rollouts
 ↓
predicted outcomes
 ↓
evaluation
 ↓
selected action
```

This can support:

- best-of-N planning
- tree search
- receding-horizon planning
- value-guided search
- model-predictive control
- trajectory optimization
- policy refinement

---

# World Models and Control

Planning and control are related but not identical.

**Planning** asks:

> Which sequence of actions is likely to achieve the goal?

**Control** asks:

> Which action should be executed now?

A world model can support both.

```text
World Model
├── predict future state
├── estimate action consequences
├── simulate candidate trajectories
└── support action selection
```

---

# World Models and Agents

World models may also become important for advanced AI agents.

A language-based agent usually operates with:

```text
prompt
memory
tools
retrieval
planning
```

A world-model-enabled agent could additionally maintain:

```text
persistent environment state
future-state predictions
counterfactual trajectories
action consequences
spatial context
temporal context
```

This could enable agents that reason not only over language but over evolving environments.

---

# World Models and Long-Horizon Intelligence

Long-horizon systems face one fundamental problem:

> Small prediction errors accumulate over time.

If a world model predicts:

```text
state₁
state₂
state₃
state₄
...
state₁₀₀
```

even small errors at early steps may distort later states.

Important research areas include:

- rollout stability
- uncertainty estimation
- error correction
- grounding
- memory
- replanning
- state abstraction
- hierarchical planning
- multi-timescale modeling

---

# World Models and Spatial Intelligence

World models often require some form of spatial representation.

Important properties include:

- object permanence
- viewpoint consistency
- geometry
- depth
- motion
- occlusion
- 3D structure
- scene persistence
- affordances
- topology
- navigation

A world model that cannot maintain consistent spatial structure will struggle in robotics and interactive simulation.

---

# World Models and Temporal Intelligence

World modeling is inherently temporal.

A system must understand:

```text
past
 ↓
present
 ↓
possible futures
```

Important temporal challenges include:

- short-term dynamics
- long-term consequences
- action delays
- event ordering
- state transitions
- memory
- recurrence
- temporal abstraction

---

# Action Conditioning

One of the most important metadata fields in this organization is:

`action_conditioned`

An action-conditioned world model predicts future states based on actions.

```text
state + action
      ↓
future state
```

This is especially important for:

- robotics
- planning
- control
- autonomous systems
- interactive environments

Without action conditioning, a model may understand dynamics but not necessarily support direct decision-making.

---

# Interactivity

Another important field is:

`interactive`

An interactive model is designed for repeated closed-loop use.

```text
observe
 ↓
act
 ↓
predict
 ↓
observe
 ↓
act
 ↓
predict
```

Interactivity is distinct from one-shot video generation.

---

# Prediction Targets

World models can predict different targets.

Examples:

```text
next frame
future video
latent state
3D state
robot state
future observation
reward
value
action
success probability
trajectory
```

A registry should therefore not treat all prediction targets as equivalent.

---

# Model Architectures

World models can use many architecture families.

Examples include:

- transformers
- video diffusion transformers
- latent diffusion
- autoregressive video models
- JEPA-style predictive architectures
- state-space models
- recurrent latent models
- multimodal transformers
- policy-conditioned transformers
- hybrid simulator-policy architectures

Architecture alone does not define whether a model is a world model.

The key question is what dynamics the model learns and how those dynamics are used.

---

# Latent World Models

A latent world model operates in a compressed representation space.

```text
observation
    ↓
encoder
    ↓
latent state
    ↓
world dynamics
    ↓
future latent state
```

Advantages may include:

- efficiency
- lower dimensionality
- abstraction
- faster rollouts
- planning in representation space

Challenges include:

- loss of physical detail
- interpretability
- grounding
- representation collapse
- mismatch between latent quality and control quality

---

# Generative World Models

Generative world models produce rich future observations.

```text
state + condition
      ↓
generative world model
      ↓
future observation
```

These systems can produce:

- video
- images
- multi-view scenes
- trajectories
- synthetic environments

Generative quality alone does not guarantee world-model quality.

A visually convincing rollout may still violate:

- causality
- physics
- object persistence
- action consistency
- geometry

---

# World Models and Synthetic Data

World models can become powerful synthetic-data generators.

Potential synthetic-data outputs include:

- robot trajectories
- video sequences
- rare-event scenarios
- environment variations
- counterfactual outcomes
- action-conditioned demonstrations
- multi-view scenes

Synthetic data can support:

- robotics training
- simulation
- perception
- policy learning
- evaluation
- edge-case generation

---

# World Models and Digital Twins

A digital twin represents a physical environment or system.

World models can complement digital twins by learning data-driven dynamics.

Potential combination:

```text
PHYSICAL SYSTEM
      ↓
SENSORS
      ↓
DIGITAL TWIN
      ↓
WORLD MODEL
      ↓
PREDICTION
      ↓
OPTIMIZATION
```

Potential applications:

- factories
- logistics
- energy systems
- mobility
- robotics
- infrastructure
- healthcare environments

---

# World Models and Autonomous Systems

Autonomous systems need predictive understanding.

Examples:

- autonomous vehicles
- robots
- drones
- industrial systems
- autonomous agents
- warehouse systems

A predictive system must reason about:

```text
what is happening
what may happen next
what happens if I act
what action best advances the goal
```

World models address the middle two questions directly.

---

# World Models and Reinforcement Learning

World models have long-standing connections to model-based reinforcement learning.

Two broad approaches:

```text
MODEL-FREE RL
policy learns directly from interaction

MODEL-BASED RL
learn environment dynamics
then plan or improve policy using model
```

World models can provide the learned environment model for model-based RL.

---

# World Models and Multimodality

Modern world models may need to integrate:

```text
vision
language
actions
audio
depth
proprioception
sensor streams
3D geometry
time
memory
```

This creates strong overlap with multimodal and omnimodal AI.

A world model for Physical AI may be inherently multimodal.

---

# World Models and Memory

World models need state.

Memory can provide information that is not visible in the current observation.

Examples:

- previous object locations
- past interactions
- unresolved goals
- environment history
- long-term context
- latent state continuity

This becomes especially important in partially observable environments.

---

# World Models and Observability

As world models move into production systems, observability becomes essential.

A production world-model stack may need to trace:

- input observations
- state representations
- action sequences
- predicted trajectories
- confidence
- rollout drift
- model latency
- memory state
- control decisions
- fallback events
- human interventions

This connects world models with the broader field of AI observability.

---

# World Models and Validation

World models are difficult to validate.

A useful evaluation framework should separate:

```text
VISUAL QUALITY
PHYSICAL CONSISTENCY
TEMPORAL CONSISTENCY
ACTION CONSISTENCY
SPATIAL CONSISTENCY
PLANNING UTILITY
CONTROL UTILITY
LONG-HORIZON STABILITY
GENERALIZATION
SAFETY
```

A model can score highly in one dimension and poorly in another.

That is why a single benchmark score is rarely sufficient.

---

# World Models and Benchmarking

World-model benchmarks may measure:

- future-frame accuracy
- latent prediction quality
- video quality
- physical consistency
- action following
- trajectory success
- planning performance
- control performance
- long-horizon rollout quality
- transfer to unseen environments
- zero-shot adaptation
- robotics success rate

A serious benchmark should state exactly which property it measures.

---

# World Models and Safety

World models may be used in safety-critical environments.

Relevant failure modes include:

- wrong future prediction
- hidden state errors
- physically impossible rollouts
- false confidence
- brittle planning
- unsafe action consequences
- out-of-distribution failure
- distribution shift
- model exploitation
- reward hacking

Safety requires more than model accuracy.

It may involve:

- uncertainty estimation
- constraints
- fallback policies
- human approval
- validation
- red-team testing
- simulation
- runtime monitoring

---

# World Models and Uncertainty

A world model should ideally not only predict a future.

It should also represent uncertainty over possible futures.

```text
current state
    ↓
possible future A
possible future B
possible future C
```

This matters because real environments are stochastic and partially observable.

Planning over uncertainty is fundamentally different from planning over one deterministic rollout.

---

# World Models and Causality

Prediction does not automatically imply causal understanding.

A strong world model should ideally capture:

```text
if action X changes
then future Y changes
```

This is especially important for:

- intervention
- planning
- robotics
- counterfactual reasoning
- scientific modeling

Causal structure remains an open research challenge.

---

# World Models and Counterfactuals

World models may support counterfactual simulation.

```text
What happens if the robot turns left?
What happens if it turns right?
What happens if it waits?
```

This is one of the strongest conceptual reasons world models matter for intelligent action.

---

# World Models and Hierarchical Planning

Advanced systems may plan at multiple timescales.

Example:

```text
high-level goal
    ↓
subgoal
    ↓
trajectory
    ↓
motor action
```

A future world-model stack may include:

- abstract world model
- task-level world model
- motion-level world model
- control-level dynamics model

Hierarchical modeling could improve long-horizon planning.

---

# World Models and Multi-Agent Systems

World models can also represent environments containing multiple agents.

Important questions include:

- What will other agents do?
- How will they react to my action?
- What information do they have?
- How does interaction change the environment?
- How should coordination be modeled?

This connects world models with:

- game theory
- multi-agent reinforcement learning
- coordination
- social simulation
- autonomous agents

---

# World Models and Simulation Infrastructure

A future world-model stack may look like:

```text
DATA
 ↓
WORLD MODEL TRAINING
 ↓
REGISTRY
 ↓
EVALUATION
 ↓
SIMULATION
 ↓
PLANNING
 ↓
POLICY
 ↓
CONTROL
 ↓
OBSERVABILITY
 ↓
VALIDATION
```

This is why world models are not only a model category.

They may become a broader infrastructure layer.

---

# World Model Registry

The organization maintains:

## Dataset

`world-models/world-model-registry`

The dataset provides structured metadata for world models and related predictive systems.

Core fields include:

- `repo_id`
- `organization`
- `model_name`
- `world_model_type`
- `architecture_family`
- `modalities`
- `domain`
- `action_conditioned`
- `interactive`
- `prediction_target`
- `planning_support`
- `control_support`
- `robotics`
- `physical_ai`
- `spatial_reasoning`
- `simulation`
- `synthetic_data`
- `parameter_count_b`
- `weights_available`
- `access_status`
- `license`
- `commercial_use`
- `base_model`
- `paper_id`
- `verification_status`
- `last_verified`
- `source_urls`
- `notes`

The purpose is not to rank models.

The purpose is to make the world-model ecosystem more structured and machine-readable.

---

# World Model Registry Space

`world-models/world-model-registry`

The interactive Registry Space provides:

```text
SEARCH
FILTER
DETAILS
COMPARE
```

Users can compare world-model characteristics such as:

- action conditioning
- interactivity
- planning support
- control support
- Physical AI relevance
- robotics relevance
- simulation
- modalities
- architecture
- license
- access
- parameter count
- prediction targets

The comparison does not choose a winner.

It is designed as a descriptive technical reference.

---

# World Models Explorer

`world-models/world-models-explorer`

The Explorer is intended as an entry point into the broader world-model landscape.

Typical exploration topics include:

- model families
- research directions
- Physical AI
- robotics
- planning
- simulation
- interactive systems

---

# World Model Benchmark

`world-models/world-model-benchmark`

The benchmark-oriented Space focuses on the evaluation dimensions that matter specifically for world models.

Important evaluation categories include:

```text
prediction
simulation
action following
physical consistency
temporal consistency
planning utility
control utility
long-horizon stability
```

---

# World Model Landscape

`world-models/world-model-landscape`

The landscape view maps the ecosystem at a higher level.

The purpose is to understand how different approaches relate to:

- world foundation models
- world action models
- interactive world models
- predictive representations
- robotics
- Physical AI
- simulation
- planning

---

# Collections

The organization maintains curated collections around major world-model subfields.

Examples of useful collection themes include:

- World Models
- World Action Models
- Interactive World Models
- Embodied AI & Robotics
- World Model Benchmarks
- World Model Datasets
- Physical AI
- Predictive Representation Learning

Collections are intended to complement the registry.

The registry provides structured metadata.

Collections provide curated discovery.

---

# Recommended Navigation

The organization is designed around the following flow:

```text
UNDERSTAND
    ↓
DISCOVER
    ↓
REGISTRY
    ↓
COMPARE
    ↓
BENCHMARK
    ↓
LANDSCAPE
    ↓
GO DEEPER
```

This turns the organization into more than a list of repositories.

It becomes a reference architecture for exploring the field.

---

# Taxonomy

A practical world-model taxonomy can be organized as:

```text
WORLD MODELS
│
├── World Foundation Models
│
├── World Action Models
│
├── Interactive World Models
│
├── Planning World Models
│
├── Predictive Representation Models
│
├── Video World Models
│
├── Robotics World Models
│
├── Physical AI World Models
│
└── Simulation Models
```

These categories can overlap.

For example:

```text
one model
├── world foundation model
├── video world model
├── physical AI model
└── simulation model
```

Taxonomy should therefore be multi-label rather than rigidly hierarchical.

---

# Maturity Model

A useful maturity model for world-model systems:

## Level 0 — Static prediction

Predict isolated outcomes.

## Level 1 — Temporal prediction

Predict future observations across time.

## Level 2 — Latent dynamics

Learn internal state transitions.

## Level 3 — Action conditioning

Predict how actions influence futures.

## Level 4 — Interactive simulation

Support repeated closed-loop interaction.

## Level 5 — Planning support

Evaluate candidate action sequences.

## Level 6 — Control integration

Use the world model directly in control loops.

## Level 7 — General world modeling

Transfer across environments, tasks and domains.

This is a conceptual maturity model, not an industry standard.

---

# World Model Evaluation Matrix

A useful evaluation matrix:

| Dimension | Core Question |
|---|---|
| Prediction | Does the model predict future states accurately? |
| Temporal consistency | Are states coherent across time? |
| Spatial consistency | Does geometry remain stable? |
| Physical consistency | Do rollouts obey plausible dynamics? |
| Action consistency | Do actions cause the expected changes? |
| Interactivity | Can the model support repeated control inputs? |
| Planning utility | Do rollouts help select better actions? |
| Control utility | Does the model improve real task performance? |
| Long-horizon stability | Do predictions remain useful over many steps? |
| Generalization | Does it work outside training conditions? |
| Uncertainty | Does it represent uncertainty appropriately? |
| Safety | Can failures be detected and controlled? |

---

# World Model Data

World models depend heavily on data.

Possible training data includes:

- internet video
- robot demonstrations
- simulation trajectories
- action-observation pairs
- teleoperation data
- 3D scenes
- driving data
- multi-view video
- egocentric video
- sensor recordings
- language instructions
- synthetic trajectories

Data quality can be as important as model scale.

---

# World Model Data Challenges

Important challenges include:

- missing action labels
- poor temporal alignment
- inconsistent sensor synchronization
- biased trajectories
- limited rare events
- weak failure data
- insufficient long-horizon sequences
- privacy constraints
- expensive robot data
- simulation-to-reality gap

---

# World Models and Synthetic Environments

World models can generate synthetic environments for:

- policy training
- rare-event simulation
- benchmark generation
- safety testing
- scenario exploration
- planning
- evaluation

Synthetic environments may become an important alternative to collecting every possible real-world trajectory.

---

# World Models and Open Weights

World models and Open Weights are different but complementary topics.

```text
OPEN WEIGHTS
        ↓
model accessibility
self-hosting
fine-tuning
deployment
inspection

WORLD MODELS
        ↓
prediction
simulation
planning
physical intelligence
```

Open-weight world models can enable:

- local research
- custom fine-tuning
- robotics deployment
- simulator integration
- reproducible evaluation
- infrastructure experimentation

---

# World Models and Interoperability

World-model systems may require interoperability between:

- sensors
- simulators
- model runtimes
- robotics middleware
- planning systems
- control systems
- evaluation tools
- observability systems

A future standardized world-model ecosystem may need common interfaces for:

```text
observations
actions
states
trajectories
uncertainty
rewards
value
metadata
```

---

# World Models and Orchestration

Complex world-model systems may combine multiple models:

```text
perception model
world model
planner
policy
critic
validator
safety model
controller
```

An orchestration layer may decide:

- which model runs
- when it runs
- which state is passed
- which tool is called
- when to replan
- when to fallback
- when to ask for approval

---

# World Models and Inference

World-model inference can be computationally expensive.

Relevant constraints include:

- latency
- frame rate
- rollout length
- memory
- batch size
- video resolution
- number of candidate trajectories
- GPU memory
- throughput
- edge deployment

Real-time robotics creates particularly strict inference requirements.

---

# World Models and Edge AI

Some world models may eventually run partially or fully on edge devices.

Potential environments:

- robots
- vehicles
- drones
- industrial machines
- mobile devices

Edge constraints include:

- limited compute
- energy
- thermal limits
- memory
- latency
- network availability

This creates strong overlap with compression, quantization and efficient inference.

---

# World Models and Research Infrastructure

A mature research ecosystem around world models needs:

```text
MODELS
DATASETS
REGISTRIES
BENCHMARKS
SIMULATORS
EVALUATION
OBSERVABILITY
DOCUMENTATION
REPRODUCIBILITY
```

The goal of this organization is to contribute to that infrastructure layer.

---

# Reproducibility

World-model research can be difficult to reproduce.

Important metadata includes:

- architecture
- base model
- training data
- action representation
- modality
- resolution
- frame rate
- rollout horizon
- evaluation environment
- hardware
- inference settings
- checkpoint
- license

Structured registries can help make this information easier to compare.

---

# Provenance

World-model provenance matters.

A useful provenance chain:

```text
BASE MODEL
   ↓
TRAINING DATA
   ↓
FINE-TUNING
   ↓
WORLD-MODEL CHECKPOINT
   ↓
TASK ADAPTATION
   ↓
DEPLOYMENT
```

Provenance helps with:

- reproducibility
- licensing
- safety
- debugging
- benchmarking
- scientific comparison

---

# Licensing

World models may use different licenses.

Important questions include:

- Are weights available?
- Is access public or gated?
- Is commercial use permitted?
- Is modification permitted?
- Is redistribution permitted?
- Are derivative models allowed?
- Are usage restrictions present?

The registry records license metadata where available.

It does not provide legal advice.

---

# Governance

World models may become important infrastructure in safety-sensitive systems.

Governance topics may include:

- model provenance
- deployment constraints
- auditability
- evaluation
- access control
- safety testing
- incident reporting
- human oversight
- data governance

---

# Research Questions

Important open research questions include:

### Definition

- What exactly qualifies as a world model?
- Where is the boundary between video generation and world modeling?
- Should predictive representation models be classified as world models?

### Prediction

- How should predictive quality be measured?
- How should uncertainty be represented?
- How can long-horizon drift be reduced?

### Physics

- How can physical consistency be evaluated?
- Can learned world models discover physics-like abstractions?
- How much explicit physics should be integrated?

### Action

- What is the best representation for actions?
- How should action conditioning be benchmarked?
- Can world models generalize to unseen actions?

### Planning

- How useful are world-model rollouts for real planning?
- When does planning through learned dynamics outperform direct policies?
- How should uncertainty influence planning?

### Robotics

- How much real robot data is required?
- How should sim-to-real transfer be measured?
- Can world models reduce physical data collection?

### Generalization

- Can one world model transfer across robots?
- Across environments?
- Across tasks?
- Across embodiment?

### Scale

- Does scaling world models produce predictable capability gains?
- Which matters more: parameters, data, temporal horizon or action quality?

### Evaluation

- What benchmark best predicts real-world usefulness?
- How should interactive systems be evaluated?
- How should long-horizon failures be measured?

---

# World Models and AGI

World models are sometimes discussed in connection with broader theories of general intelligence.

A general intelligent system may benefit from:

- persistent state
- predictive understanding
- counterfactual reasoning
- planning
- causal structure
- spatial understanding
- action modeling
- long-horizon memory

World models are one possible component of such systems.

They should not automatically be equated with AGI.

---

# World Models and Artificial Superintelligence

The same distinction applies to discussions of Artificial Superintelligence.

World models may be important for increasingly capable systems, but a world model alone does not imply:

- general intelligence
- autonomous goals
- superhuman reasoning
- self-improvement
- broad agency

World modeling is a capability layer, not a complete theory of intelligence.

---

# Knowledge Graph

A high-level knowledge graph for this field:

```text
WORLD MODELS
│
├── Prediction
│   ├── next-state prediction
│   ├── latent prediction
│   └── video prediction
│
├── Simulation
│   ├── generative simulation
│   ├── interactive simulation
│   └── synthetic environments
│
├── Action
│   ├── action conditioning
│   ├── control
│   └── policy
│
├── Planning
│   ├── rollout
│   ├── search
│   └── trajectory evaluation
│
├── Physical AI
│   ├── robotics
│   ├── autonomous systems
│   └── embodied agents
│
├── Representation
│   ├── latent state
│   ├── spatial state
│   └── temporal state
│
└── Infrastructure
    ├── datasets
    ├── registry
    ├── evaluation
    ├── observability
    ├── validation
    └── deployment
```

---

# SEO / GEO Topic Map

This organization is intentionally structured around high-value technical concepts that are likely to appear in search engines, documentation systems and generative AI retrieval.

Core terms include:

- World Models
- World Model
- AI World Models
- World Foundation Models
- World Action Models
- Interactive World Models
- Predictive World Models
- Physical AI
- Robotics World Models
- Embodied AI
- World Model Registry
- World Model Benchmark
- Learned Simulation
- Generative Simulation
- Action-Conditioned World Models
- Model-Based Planning
- Predictive Representation Learning
- Latent World Models
- Video World Models
- Robot World Models
- Physical World Models
- Spatial Intelligence
- Temporal Intelligence
- World Simulation
- Autonomous Systems
- Synthetic Environments
- Model-Based Control

The purpose is not keyword stuffing.

The purpose is to make the conceptual structure explicit and machine-readable.

---

# Frequently Asked Questions

## What is a world model?

A world model learns or approximates how an environment evolves.

It may predict future states, latent representations, observations or action consequences.

---

## Is every video model a world model?

No.

Video generation alone does not guarantee that a model captures action consequences, physical dynamics, persistent state or planning-relevant structure.

---

## What is a World Foundation Model?

A World Foundation Model is a reusable model trained to represent, generate or predict world dynamics across multiple downstream Physical AI or simulation tasks.

---

## What is a World Action Model?

A World Action Model connects world prediction with actions.

It models how actions affect future states and may also predict actions, values or rewards.

---

## What is an Interactive World Model?

An Interactive World Model supports repeated closed-loop interaction, where new actions influence subsequent predicted states.

---

## Why are world models important for robotics?

Robots must predict how actions change the environment.

World models can support planning, simulation, control and safer experimentation.

---

## Are world models only for robotics?

No.

They are also relevant to autonomous systems, simulation, video, embodied agents, digital twins, planning and reinforcement learning.

---

## What is a latent world model?

A latent world model predicts future internal representations rather than directly predicting raw pixels.

---

## What is action conditioning?

Action conditioning means that predictions explicitly depend on actions.

---

## What is the difference between a world model and a simulator?

A simulator reproduces environment dynamics.

A world model is a learned predictive model of those dynamics.

A learned world model may function as a simulator, but the terms are not identical.

---

## Can world models replace physics engines?

Not necessarily.

The two approaches can complement each other.

---

## Why maintain a registry?

The field is growing quickly and terminology is inconsistent.

A registry provides structured, source-linked metadata.

---

## Does the registry rank models?

No.

It is a descriptive technical reference.

---

# Long-Term Vision

The long-term vision of **World Models** is to become a neutral technical reference layer for the world-model ecosystem.

A mature version could connect:

```text
MODELS
  ↓
DATASETS
  ↓
REGISTRY
  ↓
TAXONOMY
  ↓
BENCHMARKS
  ↓
SIMULATION
  ↓
PLANNING
  ↓
PHYSICAL AI
```

Possible future extensions include:

- richer registry coverage
- action-space metadata
- rollout-horizon metadata
- benchmark metadata
- simulator compatibility
- robotics platform compatibility
- inference requirements
- model lineage
- licensing metadata
- physical-consistency evaluation
- long-horizon evaluation
- interactive world-model benchmarks

---

# Collaboration & Partnerships

The **World Models** organization is open to collaboration with:

- world-model research teams
- robotics companies
- Physical AI companies
- autonomous-system developers
- simulation platforms
- research labs
- universities
- model developers
- benchmark projects
- infrastructure providers
- hardware companies
- inference providers
- data platforms

Potential collaboration areas include:

- registry contributions
- structured world-model metadata
- taxonomy
- World Action Models
- interactive simulation
- robotics
- Physical AI
- planning
- control
- benchmark design
- dataset integration
- model evaluation
- observability
- deployment
- research curation
- ecosystem mapping

### Collaboration Contact

**agenten@magenta.de**

---

# Independence

**World Models** is an independent Hugging Face community organization.

It is not an official organization of Hugging Face, NVIDIA, Meta, Google, OpenAI, any university, research institute or model developer referenced in its resources.

Model names, company names and trademarks belong to their respective owners.

---

# Disclaimer

The organization provides technical documentation, curation and structured metadata.

It does not provide:

- legal advice
- safety certification
- performance guarantees
- model endorsements
- investment advice
- official vendor rankings

Model capabilities, licenses and access conditions can change.

Always verify critical information with the original model repository, paper and license.

---

# Reference Architecture

```text
                         WORLD MODELS

                               │
        ┌──────────────────────┼──────────────────────┐
        │                      │                      │
   UNDERSTAND              DISCOVER               STRUCTURE
        │                      │                      │
   Organization Card      Collections            Registry Dataset
        │                      │                      │
        └──────────────────────┼──────────────────────┘
                               │
                         Registry Space
                               │
                  ┌────────────┼────────────┐
                  │            │            │
                Search       Filter       Compare
                  │            │            │
                  └────────────┼────────────┘
                               │
                     Benchmark / Landscape
                               │
                     Physical AI / Robotics
                               │
                 Planning / Simulation / Control
```

---

# World Models

**Predict. Simulate. Plan. Act.**