| Level | Description | Key Components |
|-------|-------------|----------------|
| **Challenge** | Top-level competition | Unique slug, name, description, dates |
| **Training Dataset** | Versioned data for building models | Features + ground truth labels |
| **Inference Data** | Periodic releases for predictions | Features only (no labels) |
| **Submissions** | Your predictions | ID + 5 time-horizon predictions |