Amazon Polly vs OpenAI Text-to-Speech

The best way to compare Amazon Polly vs OpenAI Text-to-Speech: audio samples, latency, features, plans, pricing, and more.

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Amazon Polly

Text-to-speech service to transform text into natural-sounding speech using deep learning technologies.
vs

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
https://od.lk/s/NjBfMTI3MzMyNzU5Xw/arnold_rpg_dailouge.mp3
Non-Fiction
2.51
https://od.lk/s/NjBfMTI3MzMyNzI0Xw/clyde_site_sample.mp3
Conversation
2.63
https://od.lk/s/NjBfMTI3MzMyNzI0Xw/clyde_site_sample.mp3

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 derivedfrom 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

  • Feature-Rich Amazon Polly: Amazon Polly stands out with a comprehensive suite of text-to-speech features. It supports voice cloning, per-word timestamps, pitch control, speed control, and compatibility with various phone formats. These features allow for extensive customization and precise control over voice outputs, making it suitable for complex applications that require detailed audio manipulation.
  • Limited Features in OpenAI Text-to-Speech: In contrast, OpenAI Text-to-Speech offers a more basic set of features, lacking the advanced capabilities such as voice cloning and pitch control. While it supports multiple languages, it doesn't provide the same level of control and customization as Amazon Polly.
  • Versatility of Amazon Polly: The additional features of Amazon Polly make it a more versatile choice for a wide range of text-to-speech needs. Whether it's creating personalized voice experiences or syncing audio perfectly with visual content, Amazon Polly offers the tools to achieve high-quality results.

Pricing & Plans

Amazon Polly Pricing

Free

$0 /mo

  • 1M characters (for first 12 months only)

Pay As You Go

$16 per

  • 1M characters

OpenAI Text-to-Speech Pricing

Pay As You Go

$15/mo

  • 1M characters
  • Optimized for speed

Pay As You Go (TTS HD)

$30/mo

  • 1M characters
  • Optimized for quality

Pricing & Plans - Conclusion

  • Amazon Polly's Free Tier: Amazon Polly provides a generous free tier for the first 12 months, offering significant text-to-speech conversions at no cost. This feature is particularly attractive for new users or smaller projects testing text-to-speech technologies.
  • Cost-Effectiveness of OpenAI Text-to-Speech: OpenAI Text-to-Speech, while not offering a free tier, features a slightly lower ongoing cost than Amazon Polly. This pricing advantage is ideal for long-term or high-volume users who require a cost-efficient text-to-speech service over extended periods.
  • Choosing Between the Two: The choice between Amazon Polly and OpenAI Text-to-Speech depends on the user’s specific needs and usage patterns. Amazon Polly is better for those starting out or needing temporary text-to-speech services due to its initial free offer, while OpenAI Text-to-Speech is more suitable for sustained, heavier use due to its overall cost-effectiveness.

Customer Reviews

Amazon Polly Reviews

4.4 out of 5
Average of 68 ratings from leading review sites.

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.

Dolore Impedit Eum Eos
Velit Voluptatem Eius Inventore

OpenAI Text-to-Speech Reviews

 out of 5
No items found.

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Summary

  • Amazon Polly’s Features: Amazon Polly offers a rich set of features, including extensive voice customization options and a free tier for the first 12 months, making it ideal for those who need detailed control and a cost-effective start.
  • OpenAI Text-to-Speech Pricing: OpenAI Text-to-Speech, while more limited in features, provides a slightly more affordable long-term pricing model, appealing to users focused on lower ongoing costs.
  • Choosing Between the Two: The decision depends on the user’s priorities. Amazon Polly is suitable for those valuing advanced features and initial savings. OpenAI Text-to-Speech is better for users prioritizing long-term affordability. The choice between Amazon Polly and OpenAI Text-to-Speech will vary based on whether advanced features and cost savings or more consistent long-term affordability align better with the user's needs.

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.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.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.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.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.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.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.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.

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

-speaker voice generation at pricing that helps you scale.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.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.


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

The signal-to-noise ratio (SNR) is a crucial metric that measures  the amount of useful information vs. false or irrelevant background noise, frequently measured in decibels (dB). Engineers aim to maximize SNR to enhance system performance by minimizing noise interference.

Do you offer any free credits for TTS & ASR?

drop-down

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?

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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?

drop-down

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)?

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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?

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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?

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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

SNR.Audio - Text to Speech and Speech to Text