Pi has finally stopped changing every week. The company behind the coding agent announced today that Pi 1.0 is shipping, a stable release that holds the line on simplicity while adding actual new features that developers asked for. The update comes alongside a second package, Pi Durable, which the company describes as a “new substrate for building long-running agentic applications.” The announcement is a statement of intent. The company’s core promise is that Pi 1.0 is the product of months of listening to its users, fixing bugs, and adding features only after they had proven themselves.
What Pi Does
Pi is a hardened, minimal, extensible agent harness that you can make your own. It connects to models from every major AI provider, including Anthropic, and lets developers code faster with conversation. The project has grown from a small idea into a tool used by hundreds of thousands of people worldwide. The company’s stated goal is minimalism. It wants Pi to stay small and easy to understand, even as the AI industry around it grows ever more complex. That means adding new features slowly and carefully, weighing each one against the extra trouble it brings.
The team described the decision-making process in a separate post earlier this week. They wrote about how Pi balances native support for MCP and non-LLM models like Jev and image models, while holding back on features that add unnecessary weight.
The Features in Pi 1.0
The stable release includes several new features that the company says have been tested against the wall and stuck. The full list of additions in Pi 1.0 is:
- Codemode, with native support for MCP and non-LLM models like Jev and image models
- Extension support for virtual models
- Deferred tool loading
- Cache warming for Anthropic models
- Mid-conversation system messages, allowing transcript-aware prompt and tool changes
- A new TUI theme
- Full-screen mode by default
The team emphasized that the list of features that fell off the wall was much longer. The things that survived the test were judged to be truly useful, not just shiny.
Pi Durable
Pi Durable is a new experimental package that extends Pi’s minimalist principles into new directions. The company says it is designed to support longer-running conversations and tasks, and to be reachable from different surfaces. The package is described as a substrate for building long-running agentic applications. The builders and users of those applications can wield and steer the underlying intelligence with great skill.
Why the Company Called It Pi 1.0
The company chose the version number 1.0 as a signal that Pi is now a stable piece of software that people and businesses can depend on. The number is meant to mark a turning point, moving from a constantly changing prototype into something reliable. The team has spent months refining and evolving Pi based on feedback from users who submit issues and pull requests. That feedback loop is central to how the project works.
Installation
Pi 1.0 is available immediately through a simple command-line script. Users can run:
sh
curl -fsSL https://pi.dev/install.sh | sh
On Windows, the command is slightly different:
sh
powershell -c "irm https://pi.dev/install.ps1 | iex"
The company says both scripts are MIT licensed, meaning anyone can use them freely.
What Comes Next
The company is also shipping Pi Durable as an experimental package. It requires three dependencies installed via npm:
sh
npm install @earendil-works/pi-durable @earendil-works/pi-ai @earendil-works/chord
The documentation lives at pi.dev, and the code is hosted on GitHub at github.com/earendil-works/pi.
Our View of Pi 1.0
This is a project that has earned its moment. The team has spent months listening to its users, fixing bugs, and adding features only after they had proven themselves. The result is a stable release that delivers on the promise of minimalism without sacrificing capability.
Pi Durable is a bold move. It extends Pi’s principles into new dimensions, but it does so by staying true to the original design. The company is betting that people want Pi to be reachable from different surfaces and support longer-running conversations and tasks.
The announcement also signals a shift in how the company thinks about its role. Earendil was formed to craft software and open protocols that strengthen human agency. Today the company is shipping tools to help people do just that, and it is eager to hear feedback from everyone.
The team’s decision to call this Pi 1.0 is a vote of confidence. They are saying that Pi is now ready for serious use, and they are inviting the whole community to join them.
Key Facts Box
- Pi 1.0 is available now via curl or PowerShell install scripts
- Pi Durable is an experimental package requiring npm install of three dependencies
- Both are MIT licensed
- Documentation: pi.dev
- Code: github.com/earendil-works/pi
The announcement is a reminder that good software takes time. Pi has been growing for months, and the team has been patient about adding features. Now the payoff arrives.
Source material: “Pi 1.0,” earendil.com.
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