Amazon Polly vs Microsoft Azure AI Speech

The best way to compare Amazon Polly vs Microsoft Azure AI Speech: audio samples, latency, features, plans, pricing, and more.
Amazon Polly

Microsoft Azure AI Speech
Voice Quality
Amazon Polly Samples
Microsoft Azure AI Speech Samples
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 derivedfrom comprehensive, professionally-conducted evaluations, and are anonymized to ensure unbiased results.
Features
Amazon Polly Features












Microsoft Azure AI Speech Features












Features - Conclusion
- Shared Features: Both Amazon Polly and Microsoft Azure AI Speech offer robust text-to-speech features including multi-lingual support, per-word timestamps, pitch, and speed control, suitable for a variety of applications.
- Unique Azure AI Feature: Microsoft Azure AI Speech sets itself apart with voice cloning technology, a feature absent in Amazon Polly, enabling the creation of customized voice models that enhance personalized or branded audio projects.
- Versatility and Application: The inclusion of voice cloning makes Azure AI Speech particularly versatile, ideal for users who require unique, tailored voice solutions for enhancing brand identity or user engagement.
Pricing & Plans
Amazon Polly Pricing
Free
$0 /mo
- 1M characters (for first 12 months only)
Pay As You Go
$16 per
- 1M characters
Microsoft Azure AI Speech Pricing
Free
$0/mo
- 5 hours of audio (~225K chars)
Pay As You Go
$15/mo
- 1M characters
Pricing & Plans - Conclusion
- Pricing Comparison: Microsoft Azure AI Speech offers a more cost-effective rate at $15 per million characters, compared to Amazon Polly's $16 per million characters. This slight difference can add up, especially for users with substantial text-to-speech needs.
- Cost-Effectiveness: The lower price point of Azure AI Speech makes it a marginally better value, particularly for those processing large volumes of text, where even small per-character cost savings become significant.
- Consideration for Users: When selecting a text-to-speech service based solely on pricing, users should consider the cost difference between Azure AI Speech and Amazon Polly, especially if budget constraints are a major factor in their decision-making process.
Customer Reviews
Amazon Polly Reviews
Customers appreciate Amazon Polly for its natural-sounding voices, ease of use, and integration with AWS services. They find it beneficial for various applications like IVR systems, content creation, and multilingual support. However, concerns about cost, limited customization options, and occasional unnatural inflections in the voices are common. The service's scalability and fast response times are highlighted as significant advantages, helping businesses efficiently manage large-scale projects.


Microsoft Azure AI Speech Reviews
Customers appreciate Azure Text to Speech API for its ease of use, high-quality audio output, and seamless integration with other services. They find it particularly beneficial for accessibility and enhancing user experience across various applications. However, concerns about the cost and limited customization options are frequently mentioned. The API's multilingual support and continuous updates are praised, but some users desire improvements in voice naturalness and additional language options.
Compare Alternatives
Amazon Polly Alternatives
Microsoft Azure AI Speech Alternatives
Summary
- Voice Quality: Microsoft Azure AI Speech is recognized for its superior voice quality, providing more natural-sounding speech across various content types. This enhancement is crucial for applications where the realism and clarity of the voice are key to the user experience.
- Pricing Advantage: Azure AI Speech also edges out Amazon Polly in terms of cost-effectiveness, offering a slightly more affordable rate at $15 per million characters compared to Polly's $16. This price difference, while small, can be significant for users with extensive text-to-speech needs.
- Unique Features: Additionally, Azure AI Speech includes voice cloning technology, a standout feature that allows users to create custom voice models. This capability is particularly valuable for creating personalized user interactions or branded voice experiences.
TTS Property
Our next-gen TTS model surpasses competitors on performance at one-tenth the cost. Enjoy low latency websocket support and mult-speaker voice generation at pricing that helps you scale.
TTS Property
Our next-gen TTS model surpasses competitors on performance at onespeaker voice generation at pricing that helps you scale.Our next-gen TTS model surpasses competitors on performance at one-tenth the cost. Enjoyspeaker voice generation at pricing that helps you scale.Our next-gen TTS model surpasses competitors on performance at one-tenth the cost. Enjoyspeaker voice generation at pricing that helps you scale.Our next-gen TTS model surpasses competitors on performance at one-tenth the cost. Enjoy
Signal Noise Ratio
Signal Noise Ratio
Signal Noise Ratio
Do you offer any free credits for TTS & ASR?
We offer a generous free plan for developers with one month of free:
- 160 hours of text-to-speech generation
- 1.2 million characters of speech-to-text transcription
What is the monthly subscription?
Our monthly plan is $20 per month for
- 160 hours of text-to-speech generation
- 1.2 million characters of Speech-to-Text transcription
Once you exceed those limits, you can add $5 top-ups to your plan for
- additional 30hrs of Text-to-Speech
- additional 300,000 characters of Speech-to-Text
Do you offer voices & transcription other in languages?
We currently only have English voice generation & transcription. But we're working on multilingual voice support, expected to roll out in 2-3 months.
Can I create custom voices (voice cloning)?
Please contact us at founders@snr.audio with your custom voice (voice cloning) usecase. Once approved by our compliance team, you will get access to your custom voice in under 48-72 hours.
Can I use the generated audio & transcription commercially?
Yes, audio & transcription generated with Signal Noise Labs can be used commercially. You own the license to the generated content to perpetuity.
How do I cancel my subscription?
You can cancel your subscription at any time. Go to the Subscription panel in the dashboard and click the "Cancel Subscription" button.
app.snr.audio
SNR.Audio - Text to Speech and Speech to Text
