Kitten TTS TTS
An ultra-lightweight ONNX model under 80MB that runs high-quality TTS on CPU with no GPU at all.
Wrap your text in SSML tags for precise control:
<speak><prosody rate="slow">Slow speech</prosody></speak>
Tags the selected model understands — click to drop one into your text where it happens:
This model reads plain text, so inline tags are ignored. For tag-based emotion, switch to an expressive model like Orpheus or Bark.
Define custom pronunciations (word = pronunciation):
About Kitten TTS
Kitten TTS by KittenML is built for extreme portability: an ONNX-based model with variants from 15M to 80M parameters, weighing just 25-80 MB on disk. It runs entirely on CPU with 0 VRAM, yet ships 8 built-in voices, adjustable speech speed, and built-in text preprocessing that handles numbers, currencies, and units before synthesis. Output is 24kHz. While its quality sits below the larger models, its tiny size and fast (~2s) CPU inference make it ideal for edge deployment and latency-sensitive applications that can't assume a GPU is present.
Best for: Fast lightweight TTS, edge deployment, low-latency applications
Browse all Kitten TTS voicesAt a glance
- Developer
- KittenML
- License
- Apache 2.0
- Tier
- free
- Speed
- fast
- Voice cloning
- No
- Languages
- English
- Max characters
- 5000