Claude Code
Terminal-first agentic coding assistant from Anthropic. Full MCP client support, codebase-aware, runs multi-step tasks autonomously.
Kilo Code
Open-source VS Code extension and superset of Cline + RooCode. Features Architect, Coder, and Debugger modes with a built-in MCP marketplace. Processes 25T tokens in production and ranks #1 coding agent on OpenRouter.