---
title: "Pi pricing, platforms and integrations"
description: "Minimal terminal coding harness from Mario Zechner, now maintained by Earendil. Four built in tools, tree structured sessions, and TypeScript extensions for everything else."
canonical_url: "https://whichcoding.tools/tools/pi"
---
# Pi

> Minimal terminal coding harness from Mario Zechner, now maintained by Earendil. Four built in tools, tree structured sessions, and TypeScript extensions for everything else.

- **Layer**: Terminal agent
- **Vendor**: Earendil
- **Platforms**: macOS, Windows, Linux, Android
- **License**: MIT
- **Pricing**: Free
- **Status**: Active
- **JSON**: /api/v1/tools/pi.json

## Links

- [Website](https://pi.dev)
- [Repo](https://github.com/earendil-works/pi)
- [Docs](https://github.com/earendil-works/pi/blob/main/packages/coding-agent/README.md)

## Pricing

| Plan | Price | Included | Beyond that | Notes |
| --- | --- | --- | --- | --- |
| Free (individual) | Free | — | — | Bring your own keys or subscriptions |

Pi has no paid plan. MCP, subagents, sandboxing and git checkpointing are not built in, the README lists them as things extensions can add.

Source: [github.com/earendil-works/pi/blob/main/packages/coding-agent/README.md](https://github.com/earendil-works/pi/blob/main/packages/coding-agent/README.md), verified 2026-09-24.

## Works with

What Pi runs, and what can run Pi. "With your existing login" means the wrapped tool's subscription is reused, no second bill.

### Runs inside

- [agent-manager](https://whichcoding.tools/tools/agent-manager) (via CLI, Free with your existing login): Go terminal UI on tmux that runs Claude Code, Codex, OpenCode, Gemini and other agent CLIs side by side, with live status in one list and diff comments sent back to the agent.
- [dmux](https://whichcoding.tools/tools/dmux) (via CLI, Free with your existing login): FormKit's open source tmux pane manager. Each pane gets its own git worktree and branch, launches the agents you pick, and merges or opens a pull request from the pane menu.
- [goose](https://whichcoding.tools/tools/goose) (via ACP, Free with your existing login): Open source agent from Block under the Agentic AI Foundation. CLI and desktop app, MCP extensions, runs with your own keys or your Claude and ChatGPT subscriptions over ACP.
- [Herdr](https://whichcoding.tools/tools/herdr) (via CLI, Free with your existing login): Rust single binary with a background server that keeps agent terminals running after you disconnect, marks each pane working, blocked or idle and reattaches over SSH.
- [Orca](https://whichcoding.tools/tools/orca) (via CLI, Free with your existing login): Stably AI's desktop app that runs Claude Code, Codex, Cursor and other CLI agents side by side in isolated worktrees, with SSH worktrees, Design Mode and a mobile companion.
- [Paseo](https://whichcoding.tools/tools/paseo) (via CLI, Free with your existing login): Self-hosted daemon that spawns coding agents on your machine and streams them to desktop, web, mobile and CLI clients, with voice mode and an end-to-end encrypted relay.
- [Sculptor](https://whichcoding.tools/tools/sculptor) (via CLI, Free with your existing login): Imbue's desktop app for running parallel Claude Code agents in isolated containers, jumping into each one to test, then reviewing and merging. An experimental research preview.
- [Warp](https://whichcoding.tools/tools/warp) (via CLI, Free with your existing login): Terminal with a built in agent and an Agent CLI, open sourced under AGPL-3.0 in April 2026. Runs Claude Code, Codex and other CLI agents in tabs with worktrees, plus cloud agents.
- [YYLO](https://whichcoding.tools/tools/yylo) (via CLI, Free with your existing login): Command-line orchestrator for coding agents, repeatable workflows, and receipt-backed repository changes. Typed task, validation, merge, and release-readiness boundaries.

## Models

- **Providers**: Anthropic, OpenAI, Google, xAI, Mistral, DeepSeek, Moonshot, Zhipu, MiniMax, OpenRouter, Vercel AI Gateway
- **Bring your own key**: BYOK
- **Local models**: Yes
- **Signs in with**: Claude, ChatGPT, GitHub Copilot

Subscription login through /login for Claude Pro or Max, ChatGPT Plus or Pro and GitHub Copilot. Around thirty API key providers including Azure, Bedrock, Vertex, Groq, Cerebras, OpenCode Zen and Go, plus Ollama and a llama.cpp router for local models. Android means Termux.

## Features

- **ACP agent**: Can be hosted by ACP clients such as Zed
- **Plugins**: Extensible through plugins or a marketplace

## Install

- **npm**: `npm install -g --ignore-scripts @earendil-works/pi-coding-agent`
- **curl**: `curl -fsSL https://pi.dev/install.sh | sh`

## License

- **SPDX**: MIT
- **Kind**: Open source
- **Repo**: [github.com/earendil-works/pi](https://github.com/earendil-works/pi)

## Sources

Every fact above points at a vendor page and the date someone last checked it.

| Source | Covers | Verified |
| --- | --- | --- |
| [github.com/earendil-works/pi/blob/main/packages/coding-agent/README.md](https://github.com/earendil-works/pi/blob/main/packages/coding-agent/README.md) | pricing, models, features, platforms, license | 2026-09-24 |
| [pi.dev](https://pi.dev) | general, license | 2026-08-23 |

Source data: [content/tools/pi.yml](https://github.com/benjamincanac/whichcodingtools/blob/main/content/tools/pi.yml)

## Related

- [Compare Pi with another tool](https://whichcoding.tools/compare?tools=pi)
- [All terminal agents](https://whichcoding.tools/layers/harness)
- [Everything on Claude](https://whichcoding.tools/plans/claude)
- [Everything on ChatGPT](https://whichcoding.tools/plans/chatgpt)
- [Everything on GitHub Copilot](https://whichcoding.tools/plans/copilot)

Data: CC BY 4.0. Credit whichcoding.tools and link to https://whichcoding.tools. Full terms in [LICENSE-DATA](https://github.com/benjamincanac/whichcodingtools/blob/main/LICENSE-DATA).

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See the full [sitemap](https://whichcoding.tools/sitemap.md) for all pages.