# pi: Free Open Source Alternative to Amp, Antigravity, Claude Code

Canonical: https://caniforkit.com/fork/pi
Last updated: 2026-11-07

pi (Open Source, Open Source) replaces Amp, Antigravity, Claude Code, Codex. Terminal-based coding agent with a minimal core, 15+ LLM providers, tree-structured session history, and a TypeScript extension system for building your own workflows.

## Tool Specifications
- **Tool Name**: pi
- **Type**: Open Source Project
- **License**: Open Source
- **Official Website**: https://pi.dev/
- **GitHub Repository**: https://github.com/earendil-works/pi
- **GitHub Stars**: ★ 120.5k
- **Runs On**: Self-host
- **Maintenance Status**: nov 2026
- **Platforms**: web, self-hosted, docker to self-host
- **Data Storage**: All application data and configuration live on your own server or local database.
- **Installation**: Clone https://github.com/earendil-works/pi or deploy with Docker Compose
- **Setup Requirements**: Deploy via Docker or binary release from GitHub and configure environment variables.
- **The Catch / Limitation**: Requires self-hosting setup, updates, and server maintenance compared to managed Amp.

## Paid SaaS Applications Replaced (7)
Replacing these paid tools with pi saves up to $105/mo ($1,260/yr) in software subscriptions:

| Replaced Software | Category | SaaS Price | Comparison Guide |
| --- | --- | --- | --- |
| [Amp](https://caniforkit.com/amp) | [ai assistants](https://caniforkit.com/category/ai-assistant) | $15/mo | [Compare Amp vs pi](https://caniforkit.com/vs/amp-vs-pi) |
| [Antigravity](https://caniforkit.com/antigravity) | [ai assistants](https://caniforkit.com/category/ai-assistant) | $15/mo | [Compare Antigravity vs pi](https://caniforkit.com/vs/antigravity-vs-pi) |
| [Claude Code](https://caniforkit.com/claude-code) | [ai assistants](https://caniforkit.com/category/ai-assistant) | $15/mo | [Compare Claude Code vs pi](https://caniforkit.com/vs/claude-code-vs-pi) |
| [Codex](https://caniforkit.com/codex) | [ai assistants](https://caniforkit.com/category/ai-assistant) | $15/mo | [Compare Codex vs pi](https://caniforkit.com/vs/codex-vs-pi) |
| [Tabnine](https://caniforkit.com/tabnine) | [ai assistants](https://caniforkit.com/category/ai-assistant) | $15/mo | [Compare Tabnine vs pi](https://caniforkit.com/vs/tabnine-vs-pi) |
| [TRAE](https://caniforkit.com/trae) | [ai assistants](https://caniforkit.com/category/ai-assistant) | $15/mo | [Compare TRAE vs pi](https://caniforkit.com/vs/trae-vs-pi) |
| [Warp](https://caniforkit.com/warp) | [ai assistants](https://caniforkit.com/category/ai-assistant) | $15/mo | [Compare Warp vs pi](https://caniforkit.com/vs/warp-vs-pi) |

## Frequently Asked Questions

### Is pi free and open source?
pi is an open source tool licensed under Open Source that runs on self-host. Terminal-based coding agent with a minimal core, 15+ LLM providers, tree-structured session history, and a TypeScript extension system for building your own workflows.

### What is the trade-off or limitation of using pi?
Requires self-hosting setup, updates, and server maintenance compared to managed Amp.

## Related

- [Self-Hosted Open Source Directory](https://caniforkit.com/self-hosted)
- [All Paid SaaS Alternatives Index](https://caniforkit.com/alternatives)
- [Software Categories Directory](https://caniforkit.com/categories)
- [Homepage](https://caniforkit.com)