Windsurf, opencode, Kilo Code, and Roo Code — Grok Code & Editors

A growing ecosystem

Beyond Cline, Cursor, and Copilot, several other editors and tools support grok-build-0.1 via OpenAI API compatibility. They all follow the same setup: configure the base URL https://api.x.ai/v1, your xAI API key, and the model grok-build-0.1.

Windsurf

Windsurf (formerly Codeium) is an AI code editor built on VS Code, similar to Cursor in its approach. It integrates an AI assistant directly into the editor with agentic capabilities.

Configuration

Open Windsurf settings
In the models or providers section, add a custom provider
Base URL: https://api.x.ai/v1
API Key: your xAI key
Model: grok-build-0.1

Windsurf offers features similar to Cursor: contextual chat, multi-file editing, and inline completion. The speed of grok-build-0.1 is particularly well-suited for real-time completion.

opencode

opencode is a CLI tool (command-line interface) for AI-assisted development. It runs in the terminal without a graphical interface, making it lightweight and fast.

Configuration

Configure opencode via a configuration file or environment variables:

export OPENAI_API_KEY="your-xai-key"
export OPENAI_BASE_URL="https://api.x.ai/v1"
export OPENAI_MODEL="grok-build-0.1"

opencode is ideal for developers who prefer working in the terminal and don’t need a graphical interface to interact with the AI.

Kilo Code

Kilo Code is an open-source VS Code extension for AI-assisted development. Its approach is similar to Cline, focusing on transparency and user control.

Configuration

Install Kilo Code from the VS Code marketplace
Open the extension settings
Configure an OpenAI-compatible provider
Base URL: https://api.x.ai/v1
API Key: your xAI key
Model: grok-build-0.1

Kilo Code displays the estimated cost of each interaction and gives fine-grained control over the permissions granted to the agent.

Roo Code

Roo Code (formerly Roo Cline) is a fork of Cline that adds additional features, including support for custom “modes” that define the agent’s behavior (architect, code, debug, etc.).

Configuration

Configuration is identical to Cline:

Install Roo Code from the VS Code marketplace
Select an OpenAI-compatible provider
Base URL: https://api.x.ai/v1
API Key: your xAI key
Model: grok-build-0.1

Roo Code modes let you adapt grok-build-0.1’s behavior to the task: “architect” mode for design, “code” mode for implementation, and “debug” mode for diagnostics.

Which editor should you choose?

Your choice depends on your workflow and preferences:

Terminal first → opencode
VS Code + total control → Cline or Kilo Code
VS Code + custom modes → Roo Code
Integrated AI editor → Cursor or Windsurf
Multi-editor → GitHub Copilot

All these tools work with grok-build-0.1 via the same API. Try a few and stick with the one that best fits your workflow.

Key takeaways

All these editors use the same configuration: xAI base URL + API key + model
Windsurf and Cursor are standalone editors with integrated AI
opencode runs on the command line
Kilo Code and Roo Code are open-source VS Code extensions
The choice depends on your workflow, not the model