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.
Top alternatives
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OpenCode AI offers a collaborative code review feature, complementing pi's development tools with community-driven feedback.
Build custom AI agents for engineering tasks.
PotPie offers a visual interface for building serverless workflows, similar to pi's code-centric approach.
AI coding assistant for software development.
Refact AI offers code completion and debugging features similar to pi but with a focus on natural language input for coding tasks.
AI-powered coding assistant for developers and non-developers.
CodeMate offers real-time coding assistance and automated code completion, similar to pi's development support features.
AI coding assistant with multi-model chat and code generation.
AskCodi offers a paid service for developers to get code-related questions answered quickly, complementing pi's freemium model.
Last updated: 2026-07-29