A comprehensive comparison of OpenAI TTS and Amazon Polly text-to-speech services. Compare pricing, voice quality, language support, and features to find the best TTS API for your project.
Summary: OpenAI provides more natural voices with simpler APIs, while Amazon Polly offers SSML support and lower costs at scale.
| Feature | OOpenAI TTS | AAmazon Polly |
|---|---|---|
| Starting Price | $15/1M chars | $4.80/1M chars |
| Pricing Model | Pay per character | Pay per character |
| Voice Count | 9 | 60+ |
| Languages | 57 languages | 33 languages |
| Models Available | TTS-1, TTS-1-HD | Standard, Neural, Long-form, Generative |
| Special Features | - | SSML SupportSpeech MarksLexicons |
| Latency | Streaming supported | Streaming supported |
High-quality TTS with 9 expressive voices
AWS cloud TTS with multiple engine options
Pay per character
Pay per character
OpenAI TTS high-quality tts with 9 expressive voices, while Amazon Polly aws cloud tts with multiple engine options. OpenAI TTS offers 9 voices across 57 languages, whereas Amazon Polly provides 60+ voices in 33 languages.
OpenAI TTS starts at $15/1M chars (pay per character), while Amazon Polly starts at $4.80/1M chars (pay per character). The best value depends on your usage patterns and specific needs.
Both services offer high-quality voices, but they excel in different areas. OpenAI TTS's strengths include: natural-sounding voices, easy api integration. Amazon Polly's strengths include: aws integration, ssml support.
OpenAI TTS supports more languages with 57 languages compared to 33. However, language quality and accent options vary between services.
OpenAI TTS does not currently offer voice cloning. Amazon Polly does not currently offer voice cloning.
For real-time applications, consider latency and streaming support. OpenAI TTS offers streaming support. Amazon Polly offers streaming support.