Setting Up and Testing OMP (Oh My Pi) Agent

I wrote about setting up Pi a couple of months ago. I still use Pi, but less than before – my daily driver these days is Grok Build, as noted on my AI stack page. I recently discovered OMP (Oh My Pi) – a different terminal coding agent based on Pi – and I have been liking how it works so far. I am still testing it, but one thing I really like is how it lets my three model services work together instead of competing. Claude Opus 5 does the thinking, DeepSeek v4 Flash does the cheap heavy lifting, and Grok 4.5 fills in the gaps. And I can switch the whole combination per project with one command. Here's how it works. The problem I use three services: Claude (Opus 5) – the most capable model I have, but not unlimited. Quota runs out if I use it for everything. DeepSeek v4 Flash – cheap, fast, and has a huge context window. Great for volume work, but I want a stronger model overseeing it. Grok 4.5 (xAI) – a good alternative for planning, vision, and design work when I don't want to spend…