OpenAI TTS
OpenAI's simple API for high-quality speech synthesis
Verdict
Clean, natural-sounding voices with a simple API. The newer gpt-4o-mini-tts model adds instructable delivery — you can prompt for tone and style ('speak like a calm customer support agent'), not just pick a voice. Best for developers wanting quick TTS integration without complexity.
Other Speech & Audio
- GPT-4o TranscribeProduction
OpenAI's hosted speech-to-text model — more accurate than Whisper via the API
- Whisper Large V3Production
OpenAI's open-source speech recognition model — still the gold standard for self-hosted ASR
- ElevenLabsProduction
Best-in-class text-to-speech with voice cloning and dubbing
- DeepgramProduction
Real-time speech-to-text API with sub-300ms latency
- AssemblyAIProduction
Transcription API with built-in audio intelligence features
- Suno v4.5Stable
AI music generation from text prompts with full song structure