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Amazon Polly vs. Resemble.AI

The best way to compare Amazon Polly vs. Resemble.AI: audio samples, features, plans, pricing, and more.

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Text to speech API - Amazon Polly

Amazon Polly

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


AI voice generator with voice cloning for text to speech.

Voice Quality

Mean Opinion Score
Mean Opinion Score
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.


Voice Cloning
Per-word Timestamps
Pitch Control
Speed Control
Phone Formats (e.g. pcm_mulaw)
Voice Cloning
Per-word Timestamps
Pitch Control
Speed Control
Phone Formats (e.g. pcm_mulaw)
  • Amazon Polly and Resemble.AI both offer multi-lingual support and per-word timestamps, catering to a wide range of text-to-speech needs.
  • However, Amazon Polly provides more flexibility with additional features like pitch and speed control, as well as support for various phone formats, making it more versatile for different applications.
  • In contrast, Resemble.AI distinguishes itself with voice cloning capability, a feature not available in Amazon Polly, appealing to users requiring personalized voice replication.

Pricing & Plans

1M characters (for first 12 months only)
Pay As You Go
1M characters
Pay as you go
~$480 per 1M characters
80,000 seconds (~1M chars)
Extra: $0.002 per second
  • In a direct comparison of pricing between Amazon Polly and Resemble.AI, Amazon Polly emerges as the more cost-effective option for both initial and ongoing text-to-speech needs.
  • With a free tier available for the first year and a flat rate of $16 per 1 million characters thereafter, it offers significant savings over Resemble.AI's Basic and Pro plans, which approximate to $400 and $110 for the first 1 million characters, respectively.
  • This makes Amazon Polly a preferable choice for users looking for an economical text-to-speech service.

Customer 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.
Ease of use
Natural-sounding voices
Integration with AWS
Voice inflection
Customization options
3.6 out of 5
Average of 12 ratings from leading review sites.
Customers appreciate Resemble.AI for its time-saving capabilities, voice cloning accuracy, and the ability to add emotions and tones to AI-generated speech. It is particularly valued for content creation and localization features. However, criticisms include its pay-as-you-go pricing model, limited language options without premium plans, and occasional technical glitches like voice pitch issues and electronic noises. Some users also find the user interface could be improved and the AI voices need to sound more natural.
Voice cloning accuracy
Content creation
User interface
Naturalness of AI voices
Pricing model
Language options
Technical performance


  • When comparing Amazon Polly and Resemble.AI for text-to-speech services, Amazon Polly stands out as the more cost-effective and versatile option, offering a broader range of features including pitch and speed control, and support for various phone formats.
  • However, Resemble.AI offers unique voice cloning capabilities, making it a strong contender for users needing personalized voice replication.
  • Overall, the choice between the two services hinges on specific user needs, with Amazon Polly excelling in affordability and feature richness, and Resemble.AI in its specialized voice cloning feature.

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