ElevenLabs
OpenAI
Word Perfect Captions

Never Correct captions again EVER!

Stop fixing AI Captions. Start creating. We sync your actual script to the TTS timing, giving you perfect captions in SRT, VTT, and ASS formats - Instantly and error-free.

Start Free Trial See How It Works

❌ The Caption Problem

  • AI transcription makes mistakes with names, brands, technical terms
  • Manually fixing captions takes hours
  • Poor captions hurt accessibility and engagement
  • TikTok, YouTube, Instagram viewers watch on mute—they need accurate captions

✓ The Vox-9 Solution

  • Word-perfect captions generated from YOUR script
  • Auto-synced to your ElevenLabs or OpenAI audio
  • Zero typos, zero corrections needed
  • Full accessibility compliance built-in
🎙️
Two AI Voice Providers
Choose ElevenLabs (120+ voices) or OpenAI (6 voices). Get perfect captions automatically with either
📝
Word-Perfect Captions
From your script, not AI transcription. Zero errors, zero corrections
📦
All Formats Included
MP3, WAV, SRT, VTT, ASS—ready for any platform
⚡
Upload & Go
No API keys, no setup, no hassle. Just paste and generate

Why Creators Choose Vox-9

The only tool that gives you studio-quality AI audio AND error-free captions in one click

🎤

Dual AI Voice Integration

Choose from 120+ ultra-realistic ElevenLabs voices or 6 OpenAI voices. Professional audio quality with emotion, clarity, and natural delivery built-in.

📝

Caption Perfection

Unlike AI transcription, our captions come from your script—so names, brands, and technical terms are always spelled correctly. Zero post-editing required.

♿

Accessibility First

Perfect captions aren't just nice to have—they're essential. 80% of social media is watched on mute. Make your content accessible to everyone.

⚡

Lightning Fast

Generate audio and captions in minutes. No complex software, no manual timing, no corrections. Just upload your script and go.

🎨

Full Control

Adjust voice selection, speaking rate, and caption styling. Fine-tune every detail to match your content perfectly.

💾

Cloud Storage

Your projects are saved securely. Access from anywhere, anytime. Never lose your work or re-do captions.

How It Works

1

Upload Your Script

Paste your text or upload a document. Any length works—from 30-second TikToks to hour-long podcasts.

2

Choose Your AI Voice Provider

Select ElevenLabs (120+ voices) or OpenAI (6 voices), adjust speaking rate, preview your settings. Get exactly the sound you want.

3

Generate & Download

One click gets you professional audio PLUS word-perfect captions in SRT, VTT, ASS. Ready to upload anywhere.

✓ Word-Perfect Caption Technology

Our captions are generated directly from your script and timed based on sentence length, ensuring every word is spelled exactly as you wrote it. This produces professional-quality captions that are accurate and properly timed for content creators, social media, and accessibility compliance.

Note: Captions are optimized for content creation and are not manually verified for broadcast television standards.

Simple, Transparent Pricing

Start with a free trial, upgrade when you need more. No hidden fees, no surprises. Pay only for characters used.

Free
$0
2,000 characters/month
For trying out the platform
  • Standard generation
  • All premium voices
  • 1 project limit
  • Files removed after 3 days
  • 2k character limit per project
  • Export: MP3 + SRT only
  • Community support
Start Free
Light
$16/month
55,000 characters/month
For casual creators
  • Standard generation
  • All premium voices
  • Limited to 4 projects
  • Files removed after 7 days
  • 15k character limit per project
  • Export: MP3, WAV, SRT
  • Email support
Get Started
Pro
$60/month
220,000 characters/month
For regular creators
  • Priority generation
  • All premium voices + early access
  • Limited to 10 projects
  • Files removed after 30 days
  • 25k character limit per project
  • All export formats
  • Bulk file processing
  • Priority email support (24-48hr)
Get Started
Scale
$170/month
700,000 characters/month
For power users
  • Top priority generation
  • All premium voices
  • Unlimited projects
  • Files retained for 60 days
  • 40k character limit per project
  • All export formats + API access
  • Bulk file processing
  • Priority support
Get Started
Enterprise
Custom
Unlimited usage
Custom solutions
  • Highest priority generation
  • All premium voices
  • Unlimited projects
  • Custom file retention
  • 50k character limit per project
  • Full API access
  • Bulk file processing
  • Dedicated account manager
  • SLA guarantees
Let's Talk
Pay As You Go
$16/credit
55,000 characters/credit
No monthly commitment
  • Standard generation
  • All premium voices
  • Limited to 4 projects
  • Files removed after 7 days
  • 15k character limit per project
  • Export: MP3, WAV, SRT
  • Credits never expire
  • Email support
Buy Credits

Frequently Asked Questions

What's the difference between ElevenLabs and OpenAI voices?

+
ElevenLabs offers 120+ ultra-realistic voices with exceptional emotion and clarity—perfect for content that needs to sound natural and engaging. OpenAI offers 6 high-quality voices that are faster to generate and use fewer characters per minute of audio. Both produce word-perfect captions. Choose based on your voice preference and character budget.

Why do OpenAI voices use fewer characters than ElevenLabs?

+
OpenAI's TTS processes text more efficiently, resulting in approximately 30-40% fewer characters consumed for the same script compared to ElevenLabs. If you're working with a character budget, OpenAI voices let you generate more audio content from the same number of characters. Both providers deliver the same word-perfect captions.

How are your captions more accurate than AI transcription?

+
AI transcription tools listen to audio and guess what was said—leading to errors with names, technical terms, and brand names. Vox-9 generates captions directly from YOUR original script, so every word is spelled exactly as you wrote it. It's the difference between 100% accuracy and "close enough."

Why does caption accuracy matter for accessibility?

+
80% of people watch social media videos on mute. Deaf and hard-of-hearing viewers rely entirely on captions. Poor captions with typos and errors exclude these audiences and hurt engagement. Word-perfect captions aren't a luxury—they're essential for making content accessible to everyone.

Do I need API keys for ElevenLabs or OpenAI?

+
No! Vox-9 includes both ElevenLabs and OpenAI integration built-in. We handle all the API connections and billing. You just upload your script, choose a voice provider, and generate—no separate accounts or API keys needed.

What caption formats do you support?

+
We support all major formats: SRT (SubRip), VTT (WebVTT), and ASS (Advanced SubStation). All formats are generated automatically with every audio file, so you can download whichever format your video editor or platform needs.

How accurate is the caption timing?

+
Timing is automatically calculated based on your script's sentence structure and word count. This produces professional-quality timing that's accurate for content creation, social media, and accessibility compliance. The captions are not manually verified and may require minor adjustments for broadcast television standards.

Can I use this for commercial projects?

+
Yes! All paid plans include full commercial usage rights. Use your audio and captions for YouTube videos, podcasts, online courses, advertisements, client work—anything. The free trial is for testing only.

How does character counting work?

+
We count all characters in your script including spaces and punctuation. Character consumption varies by voice provider: OpenAI voices use approximately 30-40% fewer characters than ElevenLabs for the same script. Your dashboard shows real-time character counts and your remaining balance for complete transparency.

Which voice provider should I choose?

+
Choose ElevenLabs if you want the most natural, emotionally expressive voices with the widest selection (120+ voices). Choose OpenAI if you prefer faster generation and want to stretch your character budget further (uses 30-40% fewer characters). Both produce identical word-perfect captions, so the choice comes down to voice preference and character efficiency.

Can I cancel anytime?

+
Absolutely! Upgrade, downgrade, or cancel your subscription anytime from account settings. Changes take effect at the start of your next billing cycle. No long-term commitments, no cancellation fees.

Ready for Perfect Captions?

Stop wasting hours fixing transcription mistakes. Get word-perfect captions from your script.

Start Free Trial