Amazon Polly vs. OpenAI Text-to-Speech
The best way to compare Amazon Polly vs. OpenAI Text-to-Speech: audio samples, features, plans, pricing, and more.
Live Demo
Non-Fiction
Fiction
News
Blog
Conversation
0/250
Voice
Sierra
Autumn
Melody
Hannah
Emily
Ivy
Kaitlyn
Luna
Willow
Lauren
Sierra
Noah
Jasper
Caleb
Ronan
Ethan
Daniel
Zane
Rowan
Language
🇺🇸 US English
🇺🇸 US English
🇬🇧 UK English
🇨🇳 Mandarin Chinese
🇮🇳 Hindi
🇪🇸 Spanish
🇧🇷 Portuguese
🇯🇵 Japanese
🇫🇷 French
🇮🇹 Italian
Format
Standard
Standard
MP3
Phone Call
PCM µ-law
Normal
Speed
1.0
Pitch
Bitrate
192k
192k
128k
96k
64k
48k
32k
16k
Synthesize
Speed
0 s
Filesize
0 kb
Amazon Polly
Text-to-speech service to transform text into natural-sounding speech using deep learning technologies.
OpenAI Text-to-Speech
Convert text into lifelike spoken audio using one of the six built-in voices.
Voice Quality
Amazon Polly Samples
Mean Opinion Score
Fiction
3.00
Non-Fiction
2.51
Conversation
2.63
OpenAI Text-to-Speech Samples
Mean Opinion Score
Fiction
N/A
Non-Fiction
N/A
Conversation
N/A
Mean Opinion Score (MOS) is a numerical measure that represents the perceived quality of audio samples, commonly used in evaluating text-to-speech systems.
The score ranges from 1 to 5, with 1 indicating poor quality and 5 signifying excellent quality.
These scores are derived from comprehensive, professionally-conducted evaluations, and are anonymized to ensure unbiased results.
Features
Amazon Polly Features
Voice Cloning
Multi-lingual
Per-word Timestamps
Pitch Control
Speed Control
Phone Formats (e.g. pcm_mulaw)
OpenAI Text-to-Speech Features
Voice Cloning
Multi-lingual
Per-word Timestamps
Pitch Control
Speed Control
Phone Formats (e.g. pcm_mulaw)
Features - Conclusion
- Amazon Polly offers a more feature-rich text-to-speech service compared to OpenAI Text-to-Speech, including capabilities such as voice cloning, per-word timestamps, pitch control, speed control, and support for phone formats.
- OpenAI Text-to-Speech, on the other hand, has a more limited feature set, lacking in these advanced options.
- This makes Amazon Polly a more versatile choice for users needing detailed customization and control over their text-to-speech outputs.
Pricing & Plans
Amazon Polly Pricing
Free
$0/mo
1M characters (for first 12 months only)
Pay As You Go
$16per
1M characters
OpenAI Text-to-Speech Pricing
Pay As You Go
$15per
1M characters
Optimized for speed
Pay As You Go (TTS HD)
$30per
1M characters
Optimized for quality
Pricing & Plans - Conclusion
- Amazon Polly offers an attractive starting point for new users with its free tier for the first 12 months, making it ideal for those testing the waters or with minimal text-to-speech needs.
- However, for long-term or high-volume users, OpenAI Text-to-Speech edges out as the more cost-effective option, lacking a free tier but maintaining a slightly lower ongoing cost.
- Ultimately, the choice between the two services hinges on the user's specific needs and usage patterns, with Amazon Polly favoring initial use and OpenAI Text-to-Speech benefiting sustained, heavier use.
Summary
- In comparing Amazon Polly and OpenAI Text-to-Speech, Amazon Polly stands out with its richer feature set, including voice customization options and a free tier for new users, making it particularly appealing for those seeking detailed control and cost-effective entry points.
- However, OpenAI Text-to-Speech offers a slightly more affordable long-term pricing model, despite its more limited features and lack of voice quality data.
- Ultimately, the choice between the two depends on the user's priorities, whether they value advanced features and initial cost savings with Amazon Polly or prefer the slightly lower ongoing costs associated with OpenAI Text-to-Speech.