Pi is decent.

I've used the cli agents for claude, cursor, and pi, plus several custom harnesses I've written myself from time to time as experiments (and I guess technically gastown, if we're calling that a harness).

Pi is... just fine.

It does what I need it to, has a decent selection of tooling out of the box, integrates nicely with other tools, and generally gets out of my way enough that I don't think about it much anymore.

If you can run ~30b models at decent speeds, I think most folks would be pleasantly surprised at how capable they are with pi.

Tack on some of the extensions (ex https://pi.dev/packages/pi-mcp-adapter?name=mcp and https://pi.dev/packages/pi-web-access?name=search) and I get web tooling (ex - perplexity search), access to mcps to do things like drive chrome (https://browsermcp.io/) or firefox (https://github.com/mozilla/firefox-devtools-mcp)

It's fine. Is it as good as a subsidized top tier model? Nope. Is it free and still very capable? Yup.

And personally, I've been having a LOT of fun with the pi sdk (https://pi.dev/docs/latest/sdk)

Which is something that all the other providers charge you api access rates for (ex - thousands a month).