Kitten TTS is the lightest engine available on OfflineTTS. At just 24MB, it downloads in seconds and runs on virtually any device — from desktop browsers to mobile phones and embedded hardware.

The 8 expression-based voices cover a range of tones: cheerful, serious, sad, whisper, excited, gentle, calm, and neutral. Each voice is a compact embedding that shapes the model's output character.

Kitten TTS supports configurable sample rates from 8kHz to 48kHz, making it versatile for different quality and performance needs.