Cheap Agent

Cheap Agent is an MCP server and plugin for Claude Code and Codex that lets your frontier model plan while a much cheaper model writes the code. Key features: • Frontier model plans and delegates short, focused coding tasks • Budget models such as DeepSeek write code in isolated git worktrees • Every change must pass its tests before it lands • Works in both Claude Code and Codex with a single-command install Instead of spending premium tokens on every line, the expensive model handles planning and review while the cheap model does the typing. In tests on SWE-bench Verified with Opus, adding a feature used 63% fewer Opus tokens and everyday bug fixes used 59% fewer, with all tasks still solved. The cheap model cost about half a cent for that whole feature. Because each change is verified in its own worktree, your main branch stays clean and you keep only work that passes. On very small jobs there is little to save, so the gains show up most on real features and fixes in real codebases. Built for developers and small teams who hit plan limits in Claude Code or Codex and want their subscription to cover more real coding sessions without giving up test coverage. It is free to install.