Cline — Coding Agents Platform

Cline is an open-source AI coding agent for VS Code that acts as an autonomous development assistant capable of creating and editing files, executing commands, and using the browser with user permission at every step. Built as a VS Code extension, Cline uses a human-in-the-loop approach where developers see the plan, approve steps, and can steer when needed. The extension is free and open-source, with costs based on AI inference usage through your own API keys or the Cline provider. Open Source Teams is free through Q1 2026 with first 10 seats remaining free thereafter at USD 20/month, while Enterprise pricing is custom with advanced features like SSO and audit logs. Running Claude Sonnet 4.6 through Cline costs roughly USD 3-8 per hour of heavy usage, with users reporting USD 50-200 monthly in API costs. Developers praise Cline thoughtful planning, transparent tool use, and seamless VS Code integration, though it consumes significant tokens (10k+ per first request) and lacks effective code verification, often declaring tasks complete without properly checking outputs.