> For the documentation index, fetch https://sync.so/docs/llms.txt. Append .md to a page URL for Markdown. Documentation-search MCP: https://sync.so/docs/_mcp/server.

# Models

## Docs

- [Lipsync models](https://sync.so/docs/models/lipsync.md): Compare sync. labs AI lip sync models: sync-3, lipsync-2, and lipsync-2-pro. Features, pricing, quality comparisons, and best use cases for each model.
- [React models](https://sync.so/docs/models/react.md): react-1: AI model for expressive lip sync with facial expressions and head movements. Control emotions and talking head movements via API.
- [sync-3](https://sync.so/docs/models/sync-3.md): sync-3 is sync. labs's most powerful lip sync model and the default for all users. A fundamentally new architecture that delivers unprecedented realism, handling close-ups, extreme angles, and obstructions out of the box.