comparison
Lacy Shell vs Warp
A plugin for your terminal vs a replacement for your terminal.
The core difference
Warp is a full terminal replacement — a new app you switch to. Lacy is a shell plugin — it adds AI routing to whatever terminal you already use (iTerm2, Alacritty, Kitty, the default Terminal.app, or yes, even Warp).
| Lacy Shell | Warp | |
|---|---|---|
| Type | ZSH/Bash plugin | Terminal emulator |
| AI routing | Automatic — detects NL vs commands | Requires # prefix or Ctrl+Shift+Space |
| Your terminal | Keep yours | Must switch to Warp |
| AI backend | Your choice (Claude, Gemini, OpenCode, etc.) | Warp AI (proprietary) |
| Real-time indicator | Yes — color changes as you type | No |
| Price | Free, MIT licensed | Free tier + paid plans |
| Open source | Yes | Partially (warpd) |
| Platform | macOS, Linux, WSL | macOS, Linux |
| Install | One line, 30 seconds | Download app |
| Account required | No | Yes |
When to use Lacy
- You like your current terminal and don’t want to switch
- You want to use your own AI backend (Claude Code, Gemini CLI, etc.)
- You want automatic routing without prefixes or hotkeys
- You want a lightweight plugin, not a full app replacement
- You need Bash 4+ support (not just ZSH)
When to use Warp
- You want a modern terminal with built-in IDE features (blocks, notebooks)
- You prefer an integrated AI without configuring external tools
- You want team collaboration features
- You’re okay switching terminal apps
Can you use both?
Yes. Lacy is a shell plugin — it works inside any terminal, including Warp. If you use Warp but prefer automatic NL detection over the # prefix, add Lacy to your ZSH config and get the best of both.