Pi

What it does

Pi is an open-source coding agent that runs in your terminal. It ships with a small core and lets you add what you need through extensions, skills, prompt templates and themes, or ask Pi to build them itself. It works with 15+ model providers, keeps sessions as a branching tree, and can be driven from scripts, over RPC or embedded as an SDK. Version 1.0 shipped on October 1, 2026.

• Extensions and Pi packages shared via npm or git
• Steer a running agent mid-task
• Switch models mid-session
• Branching, shareable session history
• Interactive, print/JSON, RPC and SDK modes
• Automatic context compaction
• Terminal coding agent
• Extensions, skills and themes

Best for

Developers who want a customizable terminal agentSwitching between many AI modelsBuilding agent apps on an open harness

The maker

Pricing

Prices change. Confirm on the official site.

Runs on

Lit = listed by the maker. Dimmed = not listed.

Terminal. Installs with a shell script on macOS and Linux, PowerShell on Windows, or npm/pnpm/bun.

Works with

AnthropicOpenAIGoogleOpenRouterOllama

Follow

Sources

• pi.dev
• earendil.com/posts/pi-1-0
• github.com/earendil-works/pi

Last verified October 14, 2026

Suggest a correction · How we verify

Mentioned in

• The AI Agent Census: A Living Report on Real AI AgentsFrom the AIcensus blog

Similar agents