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OpenAI TTS
OpenAIAudio & SpeechProprietaryOpenAI's text-to-speech API with multiple quality tiers and 13+ voices. Converts text to natural-sounding speech with real-time streaming support.
Abilities
Audio GenerationMultilingual
Use Cases
CreativeContent WritingEnterpriseAutomationEducation
Available in Tools
OpenAI APIhttps://platform.openai.com
Availability
How to Use
Use the OpenAI TTS API with models `tts-1` (standard), `tts-1-hd` (high quality), or `gpt-4o-mini-tts` (expressive). Choose from 13+ voices and multiple output formats (mp3, opus, aac, flac, wav).
Pros
- Multiple quality tiers — standard for speed, HD for quality, mini-tts for expressiveness
- 13+ voices (alloy, echo, fable, onyx, nova, shimmer, ash, ballad, coral, sage, verse, marin, cedar)
- Real-time streaming — can start playing audio before full generation completes
- Multiple output formats supported (mp3, opus, aac, flac, wav, pcm)
- Simple API — easy to integrate into any application
Cons
- Closed source — cannot self-host, all text sent to OpenAI servers
- No voice cloning — limited to predefined voice options
- HD model costs 2x standard — adds up for high-volume use
- Less natural than ElevenLabs for nuanced emotional expression
What to Use It For
Perfect For
Application TTS integration
Simple API with streaming support, multiple voices, and quality tiers — easy to integrate
Content narration
HD model provides high-quality audio suitable for podcasts, videos, and audiobooks
Good For
Accessibility features
Reliable TTS with multiple voices improves application accessibility
Not Recommended
Voice cloning
No voice cloning capability — limited to predefined voices
Try instead: ElevenLabs
Emotionally expressive speech
Standard models lack fine-grained emotional control
Try instead: Hume, ElevenLabs
Do Not Use For
Speech-to-text
TTS only — generates speech, does not transcribe
Try instead: Whisper
Offline/self-hosted TTS
API-only — no offline option
Try instead: Kokoro-TTS
Technical Details
Pricingtts-1: $15/1M chars, tts-1-hd: $30/1M chars, gpt-4o-mini-tts: $0.60/1M text + $12/1M audio tokens