# System Model Library


The system model library contains the platform's built-in models for selection by agents, workflow nodes, and API calls. These objects are located in the **system catalog in Catalog** and are **read-only** (they cannot be added, deleted, or modified). For complete marketplace cards, status indicators, and pricing, refer to the Genesis “Models” page and current online details.

## Built-in System LLMs (Scenario Quick Reference)

| Model name | Characteristics | Use cases |
| --- | --- | --- |
| MOI-7B-Chat | Balances speed and quality | Everyday conversations and lightweight tasks |
| MOI-72B-Instruct | Stronger reasoning and long context | Complex analysis |
| MOI-Vision | Multimodal image-text understanding and generation | Mixed image and text content |
| MOI-Rapid | Low latency | High-volume customer service and similar scenarios |
| MOI-Code | Code generation and completion | Development assistance |
| MOI-Long-128k | Approximately 128K context | Long documents and multi-turn conversations |

The table above is a quick reference for model selection. For the **specific models** in the remaining categories—Embeddings, Rerank, OCR, Image, Video, TTS, ASR, and others—refer to the Genesis model marketplace (filter by the 8 categories). Refer to marketplace details and release notes for context windows, prices, and availability status.

## 8 Model and API Categories

| Category | Capability | API type |
| --- | --- | --- |
| Chat | Chat completion | Text APIs |
| Embeddings | Text embeddings | Text APIs |
| Rerank | Reranking | Text APIs |
| OCR | Document recognition | Multimodal APIs |
| Image | Image generation | Multimodal APIs |
| Video | Video generation | Multimodal APIs |
| TTS | Speech synthesis | Multimodal APIs |
| ASR | Speech recognition | Multimodal APIs |

For API endpoints, parameters, and authentication, see [Developer](../../developer/index.md) and [Genesis · API Integration](../../guides/genesis/integrate.md). For errors and rate limits, see [Error Codes](error-codes.md).

## Relationship to the System Catalog and Custom Models

| Object | Description |
| --- | --- |
| System model library | Read-only within the system catalog; one source of model versions for workflow selection |
| Sample databases / metadata repository | Also part of the read-only system catalog (see Catalog) |
| Custom models / BYOM | Register models or connect your own models in a regular Catalog directory; use the registered name in parameters such as `model` when calling them |

Platform upgrades may add or adjust built-in models. Workflow nodes pinned to a version do not silently change behavior when the library's list changes (the version bound to the node takes precedence).