Polyvox vs HeyGen.
Which AI voice tool is right for you?
HeyGen creates lip-synced AI videos with avatars, where the voice is one component of a video pipeline. It is positioned as a video tool, not a voice tool. Polyvox is built around a simpler idea: clone a voice once, speak 75+ languages in it, share or download in seconds.
Quick verdict
When each tool wins.
Polyvox
Marketers and educators who need talking-head videos at scale, with both avatar and voice generated together.
- Your output is audio, not video, podcasts, voicemail, language practice, oral exam recordings, social audio.
- You do not want to pay for avatar generation you will never use.
- You want fast iteration: type, generate, share, in seconds.
- Polyvox Pro at $10 vs HeyGen Creator at ~$24/month is a meaningful gap.
HeyGen
AI avatar and video generation platform with synced voice and face cloning.
- You specifically need an AI talking-head video, not just audio.
- You are producing avatar-led video content for sales, e-learning, or marketing.
- Lip sync and avatar customization are core requirements.
Side by side
Feature-by-feature comparison.
| Feature | Polyvox | HeyGen |
|---|---|---|
| Output type | Audio (MP3) | Video with avatar |
| Voice cloning | Yes, central feature | Yes, paired with avatar |
| Languages | 75+ | 40+ for video voiceover |
| Pricing | $10/mo Pro | $24/mo Creator and up |
| Free tier | 12 clips, voice clone, 44 languages free | 1 minute of video |
| Generation speed | Seconds | Minutes for video |
Pricing and features reflect publicly listed information at time of writing and may change. Always verify on the provider's site.
Pricing
How the plans stack up.
Polyvox
Free, then $10/month Pro
Free plan includes 12 clips, a voice clone, and 44 languages. Pro at $10/month raises that to 5 voice clones, 50 clips/month, and HD audio. Unlimited at $100/month raises that to 550 clips/month. Need more? There's an Enterprise plan too.
Free
$0
Pro
$10/mo
Unlimited
$100/mo
HeyGen
Creator from ~$24/mo, Business from ~$89/mo
Free tier: 1 minute of video. Pricing varies by plan tier and usage caps; advanced features typically require business plans. See heygen.com for current rates.
Switching
Coming from HeyGen? Here's how to switch.
- 01
Re-use your sample
Use the same 30-second voice sample you uploaded to HeyGen. Polyvox accepts most common audio formats (MP3, WAV, M4A, OGG, and more).
- 02
Clone in seconds
Drop the file into the Polyvox clone page. The new voice clone is ready in about 30 seconds and works across all 75+ supported languages.
- 03
Generate and export
Type your script, pick a language, hit generate. Download the MP3 or share a clip link.
FAQ
Polyvox vs HeyGen questions.
Is Polyvox an alternative to HeyGen?
Only if your need is audio-first. HeyGen produces video with an AI avatar; Polyvox produces audio in a cloned voice. If you need a talking-head video, HeyGen is the right tool. If you need cloned audio you can put on top of your own video, drop into a podcast, or send as a voice message, Polyvox is faster and cheaper.
Can I use Polyvox audio in a HeyGen video?
Yes. Many creators generate the audio with Polyvox in their cloned voice, then bring it into HeyGen, CapCut, or Adobe Premiere as a standalone audio track.
Is Polyvox cheaper than HeyGen?
Yes. Polyvox is free to start in 44 languages and Pro is $10/month, while HeyGen Creator is around $24/month. The pricing gap reflects the different scope, audio-only vs full video.
Try Polyvox free.
Clone a voice and generate your first clip in 75+ languages in under a minute. If it's not for you, go back to HeyGen, no hard feelings.