# Docs by LangChain: LangSmith REST API

> Markdown index of the LangSmith REST API documentation.

## LangSmith REST API

- [Read model price map](https://docs.langchain.com/langsmith/smith-api/model-price-map/read-model-price-map.md)
- [Create new model price](https://docs.langchain.com/langsmith/smith-api/model-price-map/create-new-model-price.md)
- [Update model price](https://docs.langchain.com/langsmith/smith-api/model-price-map/update-model-price.md)
- [Delete model price](https://docs.langchain.com/langsmith/smith-api/model-price-map/delete-model-price.md)