Detailed comparison across 10 dimensions
Winner: Piper
Piper clearly comes out ahead of OpenAI TTS on Staquest's weighted six-dimension score. Piper has a free tier; OpenAI TTS does not.
| Overview | ||
|---|---|---|
| Type | ai tool | ai tool |
| Company | Rhasspy Project | OpenAI |
| Free Tier | ||
| Has API | ||
| Open Source | ||
| Trending | Stable | Stable |
| Industries | MarketingDevelopment | MarketingDevelopmentMedia & Entertainment |
| Categories | ai-voice | ai-voice |
| Website | Visit | Visit |
Piper
open source
usage based
| Feature | piper | openai-tts |
|---|---|---|
| 100+ Voices Across 30+ Languages | ||
| Gpt-4O-Mini-Tts Model ($0.60 Per 1 Million Input Tokens, $12.00 Per 1 Million Audio Output Tokens) | ||
| Fast, Local Neural Text-To-Speech | ||
| Tts-1 Model ($15.00 Per 1 Million Characters) | ||
| No Cloud Required | ||
| Tts-1-Hd Model ($30.00 Per 1 Million Characters) | ||
| Optimized For Raspberry Pi 4 | ||
| Wyoming Protocol Support For Home Assistant |
Showing 8 of 8 features
Dashes mean the feature isn't listed in our data. The tool may still support it.
On Staquest's weighted six-dimension scoring, Piper comes out ahead overall, though OpenAI TTS can be the better fit depending on your priorities — see the dimension-by-dimension breakdown above.
Piper offers a free tier; OpenAI TTS does not currently list one.
Piper is open source. The feature comparison and dimension scores above cover the full breakdown.
