two¢ents

oh-my-pi vs Claude Code: which model for which job

Switch in an evening, then send cheap work to cheap models and hard work to frontier ones.

CLI: omp MIT · bring your own keys v17.0.9 · July 2026 19k GitHub stars

oh-my-pi (CLI: omp) is Can Bölük’s hard fork of pi, Mario Zechner’s open-source coding agent. It works like Claude Code in the terminal, with MCP, skills, subagents and plan mode. The difference is that you choose the model per kind of work. A frontier model takes the hard refactor and a cheap or local model writes commit messages.

It’s MIT-licensed with no subscription of its own. Use API keys, log into plans you already pay for (Claude, Copilot, Cursor), run free local models through Ollama, or mix them in one session. On first run it picks up your rules, skills and MCP servers from .claude and similar folders. I checked all of this against v17.0.9 (July 2026).

The plan, in five parts

1What you geta simulator that prices a week of agent work three ways 2Set it upinstall, log in, bring over your Claude Code config. About 20 minutes 3The routing configroles, models.yml, fallback chains and rules by folder 4The promptsfive prompts to paste, from a shakedown run to a human review 5The trapsYOLO mode by default, arrays that replace the global list, and five more

Who it’s for

You already use a terminal agent and the API bill or rate limits bother you, or you want local models on private repos. Skip it if Claude Code on your current plan covers you and cost isn’t a problem. omp ships updates almost daily, so you trade polish for control. This plan covers the switch and the routing config. Always-on assistants like Hermes get their own plans in this series.

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