Pi
@pidotdev
There are many agent harnesses, but this one is yours
5 Following 51.7K Followers
new Earendil Pi extension, pi-voice, built by CJ Pais (creator of Handy)
npm install -g @earendil-works/pi-voice
If you want to follow along with what our team is cooking up, do check out from time to time...
We also pushed out a new release so that the library can use the latest models.
New models (Opus 5.5, GPT-6-Sol and GPT-6-Luna) are live on Radius.
Hello opus. If you want it in pi, wait or pi update --models
Introducing Claude Opus 5.5, the first model in our new Claude 5.5 family.
It performs at the level of Claude Fable 5.1 for most tasks, and costs 40% less to run than Opus 5.
People of Pi, what are some of the best agentic experiences you have built or seen people build with Pi? What are some ways we could improve the experience for you?
When was the last time you felt like you truly learned something new about agentic engineering, that was reproducible and that you still do? What was it?
Today's Sunday meditation ran into some unexpected hiccups and we accidentally published just a picture first. That was not intentional! :)
Good afternoon from Vienna People of Pi ☀️
Some slightly different Sunday meditations today in which @mitsuhiko talks about some shared frustrations with agentic software engineering.
Remember that you're not alone in finding it harder than it looks!
Show more
We learned two things: 1) /bug is being used 2) and the most common cause of crashes right now is the "pi-observational-memory" extension which has a bug that triggers in 0.86.0. Just a little heads up. You should disable that extension until that is resolved upstream.
Show more
This definitely has chances of regressions because of the mid-conversation system messages. We baked it for a while, but not many run it from main. If you discover problems, please, please let us know!
(There is also /bug now)
Show more
Hello people of Pi. 0.86.0 is out now. It's a big one.
- mid-conversation system messages
- dynamic tools on supported models without losing the kv cache
- cache warming on anthropic
- faster -r/-c to resume
- lots of fixes
- /bug to report issues
Show more
"Pi reaches the Pareto frontier on both benchmarks by providing just four tools: read, write, edit, and bash. To understand how harness design affects spending, we examine costs across completed attempts, recorded turn counts, and initial context."
Sharing this analysis on the Harness Tax by @MelissaPan and others.
Show more
Use Pi to build software that shows others how to use Pi to build software
My co-founder Colin is not an engineer but he had Pi build a screen recording software to record himself showing off his exquisite slop skills! Unironically I find it kinda cool that you can do that.
Show more
My co-founder Colin is not an engineer but he had Pi build a screen recording software to record himself showing off his exquisite slop skills! Unironically I find it kinda cool that you can do that.
Show more
Radius extends the supermalleability of Pi into the inference layer. We're in early alpha.
Good morning from Vienna People of Pi🌞 Sunday meditations today from
@badlogicgames and @mitsuhiko
Among other things:
- agents that generate too much code poison their own context (slippery slop)
- code matters wherever control matters
- unreadable code from Astra
Show more
Gpt-6-astra is @OpenAI’s latest model. Astra is said to be their most intelligent model so far, with frontier leading capabilities for computer use.
Have you tried it? What are your thoughts so far? If you haven’t, give it a try in Pi today!
Show more
Pi lets you pass a project directory (cwd) to createAgentSession(), to help scope where tools should work.
Tools like read, grep, find and ls efficiently resolve in that project, and the session picks up the projects AGENTS.md and skills.
Here’s the code to try this out
Show more
Good morning from Vienna People of Pi🌞
Sunday meditations today from @badlogicgames and @mitsuhiko
- change the harness, not your workflow
- harness, know thyself
- agency to build the features you need when you need them
*clip from February with our friends @syntaxfm
Show more
