OpenAI TTS
OpenAI
OpenAI TTS is the simplest entry point for developers already in the OpenAI ecosystem who need text-to-speech alongside GPT models. Offers 11 preset voices (Alloy, Echo, Fable, Onyx, Nova, Shimmer, and 5 additional), 50+ language support with no voice cloning or customization. No subscription required — pure pay-as-you-go at $15/1M characters (tts-1) or $30/1M (tts-1-hd). Best for rapid prototyping, unified LLM+TTS pipelines, and teams that want to avoid managing a second voice vendor. Not a replacement for ElevenLabs or Cartesia for production voice-heavy applications.
No subscription required. tts-1: $15/1M characters. tts-1-hd: $30/1M characters. gpt-4o-mini-tts: $12/1M effective. Free via API credits for new accounts.
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Amazon Polly
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Enterprise TTS with 500+ voices across 140+ languages — Custom Neural Voice and Fortune 500 compliance.