pi
A terminal-based coding agent for custom workflows.
Pricing: freemium — Some features require a paid plan · Visit website
Pi Coding Agent is a minimal agent harness that allows you to customize and extend its functionality through extensions, skills, prompt templates, and themes. It supports over 15 providers and hundreds of models, enabling flexible model switching. Pi operates in four modes: interactive, print/JSON, RPC, and SDK.
Pros
- Highly customizable
- Supports multiple modes
- Flexible model switching
Cons
- Limited sub-agent support
- Steep learning curve
- No plan mode
FAQ
Is Pi open source?
Yes, it is open source.
Can I use Pi for free?
Yes, but some features may be limited.
How do I install extensions?
Install via npm or git repositories.
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Last updated: 2026-09-15