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Google Cloud Text-to-Speech vs. Amazon Polly

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

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Non-Fiction
Fiction
News
Blog
Conversation
0/250
Filesize
0 kb
Text to speech API - Google Cloud Text-to-Speech

Google Cloud Text-to-Speech

Allows developers to create natural-sounding, synthetic human speech as playable audio.
Text to speech API - Amazon Polly

Amazon Polly

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

Voice Quality

Mean Opinion Score
Fiction
3.93
Non-Fiction
3.82
Conversation
3.42
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.
  • Based on the Mean Opinion Scores provided, Google Cloud Text-to-Speech generally offers higher voice quality across fiction, non-fiction, and conversation categories compared to Amazon Polly.
  • Google's service achieves particularly notable superiority in fiction and non-fiction voice quality.
  • This suggests that for applications requiring more natural and engaging speech output, Google Cloud Text-to-Speech might be the preferable choice.

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)
  • Both Google Cloud Text-to-Speech and Amazon Polly offer a range of features that cater to developers' needs for creating natural-sounding, synthetic speech, including multi-lingual support, pitch and speed control, and compatibility with phone formats.
  • However, Google Cloud Text-to-Speech distinguishes itself with the capability for voice cloning, a feature not available in Amazon Polly.
  • Conversely, Amazon Polly provides per-word timestamps, an option not offered by Google Cloud Text-to-Speech, potentially enhancing synchronization in applications requiring precise timing.

Pricing & Plans

Free
$0/mo
1M characters
Pay As You Go
$16per
1M characters
Free
$0/mo
1M characters (for first 12 months only)
Pay As You Go
$16per
1M characters
  • In terms of pricing, both Google Cloud Text-to-Speech and Amazon Polly offer competitive pay-as-you-go plans at $16 per 1M characters.
  • The primary distinction lies in their free tiers; Google Cloud Text-to-Speech provides a potentially indefinite free allowance of 1M characters per month without a specified time limit, whereas Amazon Polly's free tier is limited to the first 12 months only.
  • This makes Google Cloud Text-to-Speech a more appealing option for users looking for long-term value without exceeding the free usage limit.

Summary

  • Overall, Google Cloud Text-to-Speech surpasses Amazon Polly in voice quality, particularly in fiction and non-fiction categories, and offers unique features like voice cloning, making it a superior choice for applications requiring high-quality and engaging speech output.
  • While both services provide competitive pay-as-you-go pricing, Google's indefinite free tier offers better long-term value.
  • However, Amazon Polly's exclusive feature of per-word timestamps may appeal to users needing precise speech synchronization, highlighting the importance of choosing a service based on specific project requirements.

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