Roo Code

Roo Code is the fork that outgrew its parent. Born from Cline's open-source codebase, it has carved its own identity with a multi-mode architecture (Architect, Code, Debug, Ask, Orchestrator) that lets you assign different AI personalities to different stages of development.

Architect mode is read-only for planning, Code mode gets full file access, Debug mode focuses on issue resolution, each with its own tool permissions that keep the context window clean and prevent accidental side effects. With 22,000+ GitHub stars, 1.2 million VS Code installs, and nearly 300 contributors, Roo Code has built serious traction fast.

The cost story is where Roo Code pulls ahead of Cline. Its apply_diff tool outputs only changed lines rather than rewriting entire files, delivering approximately 30% savings on API costs in independent testing. For a 500-line file with 10 edits, Cline outputs all 500 lines; Roo Code outputs 10-20. Combined with planning modes, some users report 75% token reduction.

The BYOK model means you connect your own API keys from OpenAI, Anthropic, Google, or local models via Ollama, and Roo orchestrates the workflow. Sticky Models remember your preferred model per mode, so switching between Claude for architecture and a local model for quick fixes happens automatically.

The Pro and Team cloud tiers add remote task execution, PR review agents, team analytics, and centralized secret management, all backed by SOC 2 Type 2 compliance. The Team plan's flat $99/month for unlimited seats is unusually generous.

The trade-off: Roo Code's power comes with configuration overhead. Setting up custom modes, selecting models per task, and managing API keys across providers requires more upfront investment than turnkey alternatives.