OpenAI Text-to-Speech vs. Amazon Polly

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

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Live Demo

Try our text-to-speech API. Click a button to generate random text:

Non-Fiction

Fiction

News

Blog

Conversation

0/250

Speed

0 s

Filesize

0 kb

OpenAI Text-to-Speech

Convert text into lifelike spoken audio using one of the six built-in voices.

Amazon Polly

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

Voice Quality

Mean Opinion Score

Fiction

N/A

Non-Fiction

N/A

Conversation

N/A

Mean Opinion Score

Fiction

3.00

Non-Fiction

2.51

Conversation

2.63

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

Voice Cloning

Multi-lingual

Per-word Timestamps

Pitch Control

Speed Control

Phone Formats (e.g. pcm_mulaw)

Voice Cloning

Multi-lingual

Per-word Timestamps

Pitch Control

Speed Control

Phone Formats (e.g. pcm_mulaw)

In comparing the features of OpenAI Text-to-Speech and Amazon Polly, it's evident that Amazon Polly offers a more comprehensive set of functionalities.
Amazon Polly supports per-word timestamps, pitch and speed control, and compatibility with phone formats, which OpenAI Text-to-Speech does not.
Both services offer multi-lingual support, but the additional features make Amazon Polly a more versatile option for users needing detailed customization and integration capabilities.

Pricing & Plans

Pay As You Go

$15per

1M characters

Optimized for speed

Pay As You Go (TTS HD)

$30per

1M characters

Optimized for quality

Free

$0/mo

1M characters (for first 12 months only)

Pay As You Go

$16per

1M characters

In a direct comparison of the "Pay As You Go" plans, OpenAI Text-to-Speech emerges as the more cost-effective option, priced at $15 per 1 million characters, which is $1 less than Amazon Polly's $16 for the same amount.
This slight price advantage makes OpenAI Text-to-Speech a marginally better value for users focused solely on pricing.
However, users should consider their specific needs and preferences, as this comparison is based purely on cost.

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Summary

When comparing OpenAI Text-to-Speech and Amazon Polly, it's clear that each service has its strengths: OpenAI Text-to-Speech is slightly more affordable, while Amazon Polly offers a broader range of features including pitch and speed control, per-word timestamps, and phone format compatibility.
The choice between the two should be based on individual needs, with OpenAI being a cost-effective solution for basic text-to-speech requirements, and Amazon Polly catering to users seeking more advanced customization and functionality.
Voice quality ratings suggest that Amazon Polly may provide a more natural listening experience, but specific preferences and use cases will ultimately guide the decision.

Looking for a better alternative to OpenAI Text-to-Speech & Amazon Polly?

Try Unreal Speech! You get 250,000 free characters every month.

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OpenAI Text-to-Speech vs. Amazon Polly

Live Demo

Try our text-to-speech API. Click a button to generate random text:

OpenAI Text-to-Speech

Amazon Polly

Voice Quality

OpenAI Text-to-Speech Samples

Amazon Polly Samples

Features

OpenAI Text-to-Speech Features

Amazon Polly Features

Features - Conclusion

Pricing & Plans

OpenAI Text-to-Speech Pricing

Amazon Polly Pricing

Pricing & Plans - Conclusion

Compare Alternatives

OpenAI Text-to-Speech Alternatives

Amazon Polly Alternatives

Summary

Looking for a better alternative to OpenAI Text-to-Speech & Amazon Polly?

Try Unreal Speech! You get 250,000 free characters every month.

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