StoryVox vs Amazon Polly
AWS developer API vs. purpose-built audiobook studio
At a glance
Feature comparison
5 features where StoryVox leads · 5 where Amazon Polly leads
See why authors choose StoryVox
Upload your manuscript and hear the difference. Your first audiobook takes about 20 minutes.
Start freeHonest take on Amazon Polly
We believe in fair comparisons — here's what Amazon Polly does well and where it falls short for audiobook production.
Amazon Polly strengths
- Cheapest option at scale for basic TTS
- Generous 12-month free tier
- Reliable AWS infrastructure
- SSML for fine-grained pronunciation control
- New Generative engine improving quality (March 2026)
Amazon Polly weaknesses
- Voice quality rated "a noticeable step below competitors"
- No GUI — requires developer expertise
- No voice cloning or voice design
- Not designed for audiobook narration
- "Unnatural inflections" common in output
- Long-Form engine ($100/1M chars) is expensive and still inferior
Which one is right for you?
Choose StoryVox if you want...
Authors who want a purpose-built audiobook studio — upload your manuscript, pick a voice, and get an ACX-ready audiobook in minutes, not months.
Try StoryVox freeChoose Amazon Polly if you want...
Engineering teams adding voice capabilities to applications — IVR systems, accessibility features, notifications. Not for content creators.
aws.amazon.com/pollyThe verdict
Amazon Polly is a raw API. StoryVox is a finished product. Unless you're building voice into your own software, there's no comparison — Polly has no GUI, no audiobook workflow, and voice quality that reviewers compare to GPS navigation.
Frequently asked questions
Technically yes, but practically no. Amazon Polly is a developer API — you'd need to write code to split your manuscript into chapters, manage SSML tags for pronunciation, handle audio concatenation, and master the output to ACX specs. Even then, the voice quality is widely regarded as inferior to modern AI voices. StoryVox handles all of this automatically.
Polly's Standard engine ($4.80/1M characters) is cheap, but the voice quality is poor. Their Long-Form engine ($100/1M characters) — the only one suitable for narration — costs more per book than StoryVox's subscription plans. A 80,000-word novel on Polly's Long-Form engine costs roughly $40-50, plus development time.
Ready to hear your book?
Upload your manuscript. Pick a voice. Download your audiobook. It really is that simple.