Compare Amazon Polly
Details side-by-side comparison of Amazon Polly against top competitors.
Detailed Comparison
Podcastle (now Async)
AI audio and video suite with text to speech, now operating as Async
TTSPodcastVoice Cloning
Pricing
| Model | Pay-as-you-go, per character | Freemium / Subscription |
| Starting Price | $4.00 per 1 million characters (Standard) | Not stated on the page we checked |
| Has Free Version | ||
| Plan Summary | Standard $4.00 per 1M charactersNeural $16.00 per 1M charactersLong-Form $100.00 per 1M charactersGenerative $30 per 1M characters | Free: 10 AI credits and about 15 min text to speech, lifetimeEssentials: 450 credits and about 2 hours a monthPro: 1,200 credits and about 10 hours a monthTeams: 3,000 credits and about 40 hours a monthBusiness custom |
Other Specifications
| Product Type | Text-to-SpeechAPI | Text-to-SpeechVoice CloningAI Video and Audio Editor |
Language Support
| Languages Supported | over 40 languages and language variants (vendor figure) | over 15 languages (pricing page); '15 different languages' and 'over 100 languages and dialects tested' on the AI voices page |
| Accent Variety | - | Not stated on the page we checked |
Voice Quality
| Quality Rating | Not stated on the page we checked | Not stated on the page we checked |
| Tonal Description | Voice types listed: Standard, Neural, Long-Form and Generative | Vendor describes natural pronunciation; no quality claim is made here. |
Voice Count
| Total Voices | 100+ | 1000+ (vendor figure) |
| Categories | Male and female voices | Stock AI voices plus voice cloning |
Ease of Use
| Usability Rating | Developer-oriented (API) | Not stated on the page we checked |
| User Experience | Not stated on the page we checked | Chat-based AI editor |
Integrations
| API Availability | Yes, API service | Developer Voice API announced under the Async brand; per-plan access not stated on the page we checked. |
| Platform Integrations | N/A | Not stated on the page we checked |
Use Cases
| Primary Use Cases | N/A | PodcastsYouTube videosPodcast adsMarketing |
| Applications | Not stated on the page we checked | Monetized YouTube content, podcast ads and marketing, per the vendor FAQ. |
Text to Speech Features
| SSML Support | Not stated on the page we checked | |
| API Access | ||
| Multi Language | ||
| Emotional Impulse | N/A | Not stated on the page we checked |
| Voice Cloning | N/A |
Character/Word Limits
| Plan Limits | Per-character billing | Text to speech allowances per plan: ~15 min lifetime (Free), ~2 h, ~10 h, ~40 h a month on paid plans |
| Monthly Limit | Free: Standard 5M, Neural 1M, Long-Form 500K, Generative 100K characters a month (see free tier terms) | ~15 minutes lifetime (Free) |
Commercial Rights
| Included | N/A | |
| Licensing Terms | Stored audio can be used for redistribution, analysis, archiving or any other use case at no extra cost; other commercial terms not stated on the page we checked | Vendor FAQ: you retain ownership of the output. Per-plan commercial rights not stated on the page we checked. |
File Formats
| Supported Formats | MP3OGG | MP3WAV (paid plans) |
| Export Options | MP3, OGG and other standard audio formats | Audio: MP3 up to 160kbps on Free, 320kbps MP3 or 1411kbps WAV on paid plans |
Customer Support
| Support Channels | N/A | Not stated on the page we checked |
| Priority Support | N/A | Not stated on the page we checked |
Find Your Perfect Voice AI Solution
Choosing the right text-to-speech platform impacts user experience and production costs. Let our comparison guide your decision.