> ## Documentation Index
> Fetch the complete documentation index at: https://docs.usesecond.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Overview

Second offers API endpoints for using large language models deployed on the platform in a way that's compatible with OpenAI's API. This allows you to seamlessly integrate Second's fine-tuned models into your existing applications that use OpenAI clients and libraries.

## Key Features

* **OpenAI Compatibility**: Use your existing OpenAI-based code with minimal changes.
* **Custom Fine-Tuned Models**: Access models you've fine-tuned on Second through a familiar API interface.
* **Flexible Deployment**: Easily switch between OpenAI and Second-hosted models in your applications.