kitio.aiAmazon Polly vs Piper
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Piper is completely free, while Amazon Polly is freemium.
At a glance
Best for
Category
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Neural and generative voices
- SSML support
- Custom lexicons
- Speech marks
- Long-form voices
- Runs offline on CPU
- Dozens of languages
- Multiple voice quality sizes
- Python and CLI interfaces
- Custom voice training
| Feature | Amazon Polly | Piper |
|---|---|---|
| Best for | AWS text-to-speech service for apps, IVR and content at scale | Fast local text-to-speech engine popular with Home Assistant users |
| Category | Audio & voice | Audio & voice |
| Pricing model | Freemium | Free |
| Starting price | See pricing page | Free |
| Free plan | Yes | Yes, fully free |
| Made by | Amazon Web Services | Open Home Foundation |
| Based in | United States | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
Piper is completely free, while Amazon Polly is freemium.
Free plan
Cheapest paid plan
Top plan
Free trial
5 plans
Free tier
Free
- Millions of free characters per month
- For new AWS accounts
Standard voices
$4 / 1M characters
- Pay-as-you-go
Neural voices
$16 / 1M characters
- More natural speech
Generative voices
$30 / 1M characters
- Most humanlike voices
Long-form voices
$100 / 1M characters
- For long-form content
Prices in USD, checked Oct 28, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
Amazon Polly
- Reliable at very high volume
- Fits existing AWS setups
- Low price for standard voices
- Less expressive than newer startups
- Requires an AWS account and setup
Piper
- Runs on a Raspberry Pi
- Private, fully offline speech
- Large set of free voices
- Less natural than cloud voices
- No voice cloning from short samples
Which one should you choose?
Choose Amazon Polly if you want:
- Reliable at very high volume
- Fits existing AWS setups
- Low price for standard voices
Watch out: less expressive than newer startups.
Choose Piper if you want:
- Runs on a Raspberry Pi
- Private, fully offline speech
- Large set of free voices
Watch out: less natural than cloud voices.
Amazon Polly vs Piper FAQ
What is the difference between Amazon Polly and Piper?
Amazon Polly: AWS text-to-speech service for apps, IVR and content at scale. Piper: Fast local text-to-speech engine popular with Home Assistant users. Both are audio & voice tools.
Is Amazon Polly or Piper cheaper?
Piper is completely free, while Amazon Polly is freemium.
Do Amazon Polly and Piper have free plans?
Amazon Polly: Yes. Piper: Yes, fully free.
Who makes Amazon Polly?
Amazon Polly is made by Amazon Web Services, based in United States.
Who makes Piper?
Piper is made by Open Home Foundation.
Which should I choose, Amazon Polly or Piper?
Choose Amazon Polly if you value reliable at very high volume and fits existing aws setups. Choose Piper if you value runs on a raspberry pi and private, fully offline speech.