Assign Different Models per Role in ohmypi (Like Hermes)

Melvin Vivas · X post · 2026-08-31 · Open on X

Topics: AI Agents, Tool Use & MCP, AI Dev Tools & Productivity · Level: intermediate

Summary

The ohmypi coding agent lets you assign a different LLM to each role, as the Hermes agent does. This lets you balance cost and capability by giving each role a model that fits it.

Key points

• ohmypi supports setting a separate model for each agent role.
• Hermes has a similar per-role model setting.
• Matching models to roles (for example, cheap models for simple roles and strong models for hard ones) helps control cost.

Resources mentioned

• ohmypi · tool · github.com · free
  A coding agent that lets you assign different models to different roles.
  Also in: Low-Cost Agent Run: DeepSeek V4 Flash via OpenRouter in ohmypi (Melvin Vivas on X · notes)
• Hermes · tool · hermes-agent.nousresearch.com · free
  The AI agent the creator uses to automate making explainer videos. It is probably Nous Research's Hermes Agent, but the post does not say so.
  Also in: OpenAI DevDay recap: Dots, GPT-6.1 Sol, Codex Cloud, Agents API (Melvin Vivas on X · notes), Coworker: free open-source desktop AI coworker app (Melvin Vivas on X · notes), Agent Monitor: see traces, tokens and costs of your coding agents (Melvin Vivas on X · notes), Coworker: An Open-Source Desktop Agent App for Local and Cloud Models (Melvin Vivas on X · notes) and 13 more

Try this

• Set up per-role models in ohmypi to balance cost and quality.