Text-to-Speech · Compare
Speechify vs OpenAI Text-to-Speech
OpenAI's TTS produces high-quality, steerable voices but meters by tokens rather than characters, so cost takes estimation. Speechify bills from $6 per 1M characters with no token math, adds voice cloning that OpenAI does not offer, and ships many more voices.
Speechify
OpenAI Text-to-Speech
Speechify at a glance
from $6
per 1M characters
<300ms
first byte, streaming
30+
languages
1,500+
voices
| Capability | Speechify | OpenAI Text-to-Speech |
|---|---|---|
| Price (per 1M chars) | From $6 / 1M | gpt-4o-mini-tts is token-metered (~$0.015/min, roughly $15 per 1M-char equivalent) |
| Pricing model | Flat per character; no token math | Token-metered; you estimate cost from tokens or minutes, not characters |
| Voice quality | Proprietary neural voice models | High-quality, expressive voices; steerable via instructions |
| Voices | 1,500+ | A small fixed set of built-in voices |
| Languages | 30+ | Multilingual; varies by voice |
| Voice cloning | Professional voice cloning included | No cloning of arbitrary voices; built-in voices only |
| Latency | Sub-300ms first byte, streaming | Streaming supported; latency varies |
| Commercial use / free tier | Commercial use on every plan; 50K chars/month free | Commercial use; no standing free tier for the API |
The verdict
OpenAI TTS is convenient if you are already building on its platform and like instruction-steerable built-in voices. Speechify is the better fit when you want predictable per-character pricing, voice cloning, and a much wider voice selection.