pi vs zero
Terminal coding agents compared
pi and zero are open source coding-agent projects for working with code through a terminal. pi combines a coding-agent CLI with a TypeScript toolkit and SDK, while zero focuses on repository tasks, configurable action permissions, and local sessions.
pi: Build and Customize AI Coding Agents
Pi is a TypeScript toolkit for building and using AI agents, with a coding-agent CLI, terminal UI, and unified API for multiple LLM providers. Its extensible design suits developers who want to adapt an agent to their workflows.
zero: Run a Local Terminal Coding Agent
Zero is a Go-based terminal coding agent that can inspect and edit repositories, run commands, and work with many hosted or local models. It suits developers who want scriptable coding assistance with local sessions and explicit controls over side effects.
| pi | zero | |
|---|---|---|
| Language | TypeScript | Go |
| License | MIT | MIT |
| Stars | 112k | 1.7k |
| Forks | 14.2k | 194 |
| Last analyzed | Oct 3, 2026 | Oct 3, 2026 |
Key differences
- pi is written in TypeScript and includes an SDK and agent libraries; zero is written in Go.
- pi emphasizes adapting agent workflows with extensions, skills, prompts, themes, and packages; zero offers MCP servers, plugins, hooks, skills, and specialist subagents.
- pi provides a unified API for multiple LLM providers; zero supports hosted providers, local model services, and compatible endpoints.
- zero has permission controls and sandbox policies for file writes, shell commands, network access, and additional directories; pi runs with its launching user's permissions and advises using a sandbox or container for stronger isolation.
- Both support scripted use, but pi offers print and JSON modes plus RPC, while zero provides a headless command with text, JSON, and stream-JSON options.
- pi lists 112k stars and zero lists 1.7k stars.
Choose pi if you…
- want a TypeScript toolkit and SDK for building applications around an agent.
- need to customize prompts, themes, tools, or the terminal interface for a workflow.
- want RPC or print and JSON modes for automation and integration.
Choose zero if you…
- want configurable permissions and sandbox policies for agent actions.
- need local sessions that can be searched, resumed, forked, or rewound.
- want to use hosted or local models and run headless tasks with structured I/O.
This comparison is generated with AI from the OSRepos analyses of both projects. Always check each project's repository and documentation before choosing.