Cline vs Roo Code: Which Open-Source VS Code Agent Is Better?

Cline and Roo Code are the two highest-download open-source AI Agent plugins on the VS Code Marketplace. They share key characteristics: fully open-source, support for custom model APIs, and compatibility with any VS Code environment. This article provides a detailed comparison.

One-Sentence Summary

• Cline: More stable and conservative — ideal for production use
• Roo Code: More aggressive with more features — ideal for users who like to explore the cutting edge

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Basic Information

Item	Cline	Roo Code
License	Apache 2.0	Apache 2.0
GitHub Stars	~30k+	~15k+
VS Code Downloads	5M+	1M+
Origin	Independent project	Cline Fork
Maintenance Team	Cline Inc.	Community-driven

Roo Code originally started as a fork of Cline, but has since developed a substantial set of unique features.

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Feature Comparison

Core Agent Capabilities

Both support:

• Multi-file autonomous editing
• Terminal command execution
• Browser automation
• MCP tool integration
• Task planning and execution

Roo Code Exclusive Features

• Multiple Modes: Configure different system prompts and models for different tasks (coding, architecture, Q&A)
• Boomerang Tasks (Orchestrator Mode): The main agent can break down sub-tasks and dispatch sub-agents to execute them in parallel
• More Aggressive Auto-Approval: Configurable auto-approval rules for more operations, reducing the number of manual confirmations

Cline Exclusive Advantages

• More stable task execution (better error recovery)
• More conservative permission controls (each operation requires confirmation by default)
• Better context compression strategies
• Maintained by the official team, ensuring consistent updates

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Model Support

Both support:

• OpenAI API (GPT-4o, o3, etc.)
• Anthropic API (Claude Sonnet 4.5, Opus 4.6)
• Google Gemini
• DeepSeek, Qwen, and other Chinese-developed models
• OpenAI-compatible endpoints (Ollama, Volcengine Ark, SiliconFlow, etc.)
• Azure OpenAI

Recommended for users in China: Pair with the Volcengine Ark Coding Plan (plan details) — Lite starts at 9.9 CNY first month (renews at 40 CNY) with generous request quotas and full domestic accessibility.

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Pricing Model

Both plugins are free to use; costs come from API usage:

Option	Cost	Notes
Anthropic Claude API	$15-75/million tokens	Official API, highest quality
Volcengine Ark Coding Plan	40-200 CNY/month (first month 9.9-49.9 promo)	Recommended in China, usage-based billing
SiliconFlow	Per-token pricing	Supports DeepSeek and others
Ollama (local)	Free	Requires a local GPU

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Learning Curve

Item	Cline	Roo Code
Initial Setup	Easy	Easy
Feature Exploration	Moderate	Complex
Community Documentation	Comprehensive	Average

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China Accessibility

Both support connecting to domestic API providers. When paired with services like Volcengine Ark, they work entirely without a proxy.

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Recommendations

Choose Cline if you:

• Are new to AI Agent-assisted coding
• Value stability and controllability
• Use it in a team collaboration setting
• Want clear official support backing

Choose Roo Code if you:

• Are already familiar with Cline and want more features
• Need Orchestrator / multi-agent mode
• Enjoy trying the latest features
• Are willing to accept occasional instability

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Overall Scores

Dimension	Cline	Roo Code
Feature Richness	8/10	9/10
Stability	9/10	7/10
Ease of Use	8.5/10	7/10
China Experience	8/10	8/10
Value for Money	9/10	9/10

Both are excellent open-source tools. We recommend starting with Cline to learn the AI Agent workflow, then exploring Roo Code’s advanced features once you’re comfortable.