ProSpeaker vs ResponsiveVoice

Two different approaches to website TTS. ProSpeaker uses AI voices from cloud providers; ResponsiveVoice uses your browser's built-in speech synthesis.

TL;DR

Choose ProSpeaker if:

  • Voice quality matters to you
  • You want consistent audio across all browsers
  • You prefer natural, AI-generated speech

Choose ResponsiveVoice if:

  • • You need browser-based TTS with no cost
  • • Offline functionality is essential
  • • Voice quality isn't your priority

Feature Comparison

Feature
ProSpeaker
ResponsiveVoice
Voice Technology

AI voices sound more natural

 AI voices (OpenAI, Azure, Google Cloud, Amazon Polly) Web Speech API (browser voices)
Voice Quality

Browser voices can sound robotic

 High (neural AI) Varies by browser
Voice Providers 4 cloud providers Browser-dependent
Pricing Model Fixed monthly ($25-$149+) Browser-based (no cost)
Starting Price

1 credit = 100 characters

 $25/mo for 4,000 credits Browser-based (no cost)
Caching

Reduces costs 50-75%

 ✓ ✗
Installation One script tag One script tag
Customization Visual editor in dashboard Basic options
Works Offline

Browser TTS works offline

 ✗ ✓
Consistent Quality

Same voice on all browsers

 ✓ ✗

Voice Quality: The Key Difference

ProSpeaker

Uses cloud AI voices from OpenAI, Azure, Google, and Amazon Polly. These are the same voices used by professional audiobook narrators and podcasters.

  • Natural intonation and rhythm
  • Consistent across all browsers and devices
  • Professional-quality output
Hear our voices →

ResponsiveVoice

Uses the Web Speech API built into web browsers. Quality depends entirely on which browser and operating system the visitor uses.

  • • Chrome uses Google voices (decent quality)
  • • Safari uses Apple voices (good on macOS)
  • • Other browsers vary widely

Result: Your visitors hear different voices based on their browser.

Pricing Comparison

ProSpeaker ResponsiveVoice
Starter $29/month (100K chars) $19/month
Pro $99/month (500K chars) $39/month
Pricing Model Fixed monthly Per-domain or pageviews

Note: ProSpeaker is more expensive, but you're paying for AI-quality voices vs. browser voices.

Best Use Cases

When ProSpeaker Wins

  • Professional blogs and publications Voice quality reflects on your brand
  • Long-form content Listeners stick around for better voices
  • Consistent brand experience Same voice on every browser

When ResponsiveVoice Wins

  • •
    Zero budget projects Browser-based (no cost)
  • •
    Offline-first applications Works without internet connection
  • •
    Quick prototypes Get TTS working fast without signup

Common Questions

Answers about switching from ResponsiveVoice

Common questions answered
Is ProSpeaker a drop-in replacement for ResponsiveVoice?
The installation is similar (one script tag), but ProSpeaker works differently. ResponsiveVoice uses your browser's speech engine; ProSpeaker sends text to our servers and returns AI-generated audio. You'll need to update your script tag and set up a ProSpeaker account.
Why is ProSpeaker more expensive?
ProSpeaker pays for AI voice generation from OpenAI, Google, Azure, and Amazon for every character. ResponsiveVoice uses browser APIs with no cost. You're paying for significantly higher voice quality and consistency.
Can I try ProSpeaker before committing?
Yes! Contact us to evaluate ProSpeaker with your content. All plans include access to all voice providers.
Will my content work with ProSpeaker?
If your content works with ResponsiveVoice, it will work with ProSpeaker. We use Mozilla Readability for content extraction, which handles most blog and article layouts automatically.

Try ProSpeaker

Plans start at $25/month for 4,000 credits. All voice providers included.

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