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Introduction

Billy.sh is an open-source, terminal-based AI coding assistant that runs entirely on your machine.

No subscription. No API keys. No cloud. Just fast local AI.

Tools like GitHub Copilot are powerful, but cost $10–19/month. If you’re a student, indie developer, or just getting started — that adds up.

Billy runs on Ollama, a free local LLM server, and works offline. Pay once (or use the free tier) and it’s yours.

  • 💬 Chat with any Ollama model from your terminal
  • 🤖 Agentic mode — Billy can propose and run shell commands, read the output, and self-debug until it works
  • 🧠 Remember things about you across sessions
  • 📜 Resume conversations — full session history
  • 🔄 Switch models on the fly with /model
  • 📦 Download models without leaving the app with /pull
  • ⌨️ Command picker — type / to see all commands
  • 📊 Progress bars and collapsible command output for a clean terminal experience
LibraryRole
GoLanguage
Bubble TeaTUI framework
LipglossTerminal styling
GlamourMarkdown rendering
OllamaLocal LLM server
SQLiteHistory & memory storage