Amazon Polly is a cloud TTS service with neural voices tightly integrated into the AWS ecosystem.
✓ Pros
- Seamless AWS IAM and S3 integration
- Speech Marks (metadata) for lip-sync and highlighting
- Pay-as-you-go pricing with 12-month free tier
- Low-latency streaming synthesis
✗ Cons
- Smaller voice catalog than Google Cloud TTS
- Neural voices limited to specific languages
- Less natural prosody compared to newer deep-learning rivals
| Free tier | ✓ Free tier |
| Pricing model | usage |
| Price (Standard) | varies USD |
| Features | |
| Languages | en, ja |
| Voices | 80 |
| API | ✓ Available Docs ↗ |
| Pricing Plans | Free Tier$05M standard chars/mo for 12 months Standard voices$4/1M charsAfter free tier Neural voices$16/1M charsAfter free tier |
| Platforms | |
| Integrations | AWS Lambda, Amazon Lex, S3, Amazon Connect, SDK (Python, JS, Java) |
| Homepage | https://aws.amazon.com/polly/ |
AI Commentary
Amazon Polly is the natural TTS choice for AWS-native architectures, particularly those using Amazon Lex chatbots or Amazon Connect contact centers. Speech Marks—timestamped metadata for words and visemes—enable lip-sync animations and karaoke-style highlighting. Voice naturalness is adequate for utility applications but falls behind Google Neural2 and ElevenLabs for expressive or creative content.