Amazon Polly vs Kokoro
On the evidence we track, Amazon Polly leads this comparison with a composite score of 74/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.
Capabilities
Feature-by-feature on the axes that matter for ai voiceover. “-” means undocumented, not absent.
What each one is
The product in its own terms, so the numbers below have context.
Amazon Polly
LeaderA cloud-based text-to-speech service that transforms written text into spoken audio using neural AI models. Supports multiple languages and voices with customization through markup language tags and pronunciation rules.
Kokoro
An open-weight text-to-speech model with 82 million parameters that provides quality comparable to larger models while being faster and more cost-efficient. Supports multiple languages and can be self-deployed in production or personal projects.
Pricing
List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.
Amazon Polly
LeaderFrom $4.00 per 1M characters (Standard Voices). Four voice type tiers with different pricing. Free tier includes millions of monthly characters depending on voice type.
- Standard VoicesFree
- Standard text-to-speech voices
- SSML support
- Custom pronunciation lexicons
- Neural VoicesFree
- High-quality neural voices
- Newscaster speaking style
- SSML support
- Speech Marks metadata
- Long-Form VoicesFree
- Long-form optimized voices
- Extended synthesis support
- SSML support
- Generative VoicesFree
- Generative voice synthesis
- Advanced voice quality
- Bidirectional streaming API
Platform & deployment
Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.
Integrations
What each product connects to. Counts come from the vendor's own integration directory where one exists.
Amazon Polly
Leader- Amazon Connect
- Amazon Chime SDK
- AWS Chime SDK
- Alexa Skills
- Amazon Chime
Kokoro
Not documented yet.
Amazon Polly or Kokoro: which one depends on you
A composite score cannot know your constraints. Describe them and both get re-weighted against what you actually need, with the evidence behind every position.
Free to run, no account needed to start. How the evaluation works
Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.