lumi-ai 0.1.1

Speech-to-text utility with hotkey activation

Lumi

Lumi is a speech-to-text utility that allows quick voice input activated by double-tapping the Option key.

Features

• Easy activation with double-tap Option key hotkey
• Single-tap to stop recording (more intuitive)
• Automatically transcribes speech when recording stops using Groq, ElevenLabs APIs, or local MLX Whisper
• Copies transcription to clipboard and automatically pastes it
• Plays lightweight notification sounds when recording starts/stops
• Command-line interface with configuration options
• Primarily tested on macOS (may work on other platforms but not fully tested)

Requirements

• Python 3.12+
• PortAudio library (brew install portaudio on macOS)
• For local transcription (default):
  • MLX (Apple Silicon Macs only) - no API key needed
• For cloud transcription (optional):
  • Groq API key or
  • ElevenLabs API key

Installation

From PyPI

pip install lumi-ai

Or with uv:

uv pip install lumi-ai

After installation, you can use the lumi command directly.

From Source

1. Clone this repository
2. Install dependencies with uv sync
3. Run with uv run -m src.lumi.s2t

Development Installation

For development:

uv pip install -e .

Usage

Command-line Options

# Choose transcription service
lumi --service mlx            # Use local MLX Whisper (default, no API key needed)
lumi --service groq           # Use Groq API
lumi --service elevenlabs     # Use ElevenLabs API

# API keys
lumi --api-key YOUR_GROQ_API_KEY
lumi --service elevenlabs --elevenlabs-api-key YOUR_ELEVENLABS_API_KEY

# Specify models
lumi --service groq --model whisper-tiny
lumi --service elevenlabs --model custom_model
lumi --service mlx --model mlx-community/whisper-large-mlx-q4

# Other options
lumi --no-auto-paste          # Disable auto-pasting
lumi --debug                  # Enable debug logging

Basic Usage

1. Double-tap the Option key to START recording
2. Speak clearly into your microphone
3. Single-tap Option to STOP recording
4. The transcription will be copied to your clipboard and automatically pasted at your cursor position

Keyboard Controls

• Double-tap Option: Start recording
• Single-tap Option: Stop recording
• Ctrl+C: Exit application

Advanced Features

• Automatic fallback to alternative audio input devices
• Temporary recordings stored in system temp directory
• Sound notifications for recording start/stop
• Auto-paste functionality (can be disabled with --no-auto-paste)
• Platform-aware keyboard shortcuts (Cmd+V on macOS, Ctrl+V elsewhere)
• Debug mode for troubleshooting with detailed logging

Platform Support

• macOS: Fully supported and tested
• Linux/Windows: Basic functionality may work but not extensively tested
• MLX Whisper: Only works on Apple Silicon Macs

Development

• Install dependencies: uv sync
• Add dependency: uv add package_name
• Lint: ruff check .
• Format: ruff format .
• Test: pytest
• Test specific file: pytest path/to/test_file.py