# Cline

Cline is an AI-powered coding assistant designed for interactive, agent-style development workflows. It enables developers to reason over codebases, plan multi-step changes, and execute actions using large language models (LLMs), all from within the editor.

Cline supports OpenRouter as an API provider, allowing you to access a wide range of language models, including **Arcee AI’s Trinity models,** through a single OpenAI-compatible endpoint. This simplifies setup, enables easy experimentation across models, and centralizes authentication, usage tracking, and billing.

This guide walks through how to configure Cline to use Trinity models via OpenRouter.

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**Prerequisites**

* OpenRouter Account
  * If you don't have an account, set one up [here](https://openrouter.ai/).
* OpenRouter API Key
  * If you don't have an API Key, create one [here](https://openrouter.ai/settings/keys).

**Configure OpenRouter in Cline**

1. Open **Cline Settings**
2. Click the settings icon (⚙️) in the Cline panel
3. Select API Provider
   1. Choose **OpenRouter** from the *API Provider* dropdown
4. Enter API Key
   1. Paste your OpenRouter API key into the **OpenRouter API Key** field
5. Select Model
   1. Choose an Arcee **Trinity** model (example: Trinity-Large) from the *Model* dropdown