FastH3 Omni vs sync.
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
FastH3 Omni compared with sync.
| Detail | 
FastH3 Omni | 
sync. |
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| What it does | AI video generation with synced audio from reference images and text prompts
| AI lip sync, dubbing and talking video for Claude Code, Codex, Cursor and other agents
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| Stage | Not given
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| Founded | Not given
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| Based in | Not given
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| Pricing model | Paid
| Freemium
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| Pricing | Not given
| Free tier: 3 free video generations per month (up to 15 seconds each), 10 monthly audio generations. Paid plans on legacy usage billing: Hobbyist ($6 invoice threshold, $0.04-$0.05/sec lipsync-2), Creator ($20 threshold, $0.067-$0.083/sec lipsync-2-pro), Growth ($50 threshold), Scale ($250 threshold
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| Key features | - Up to 9 reference images per generation
- Up to 3 audio references per generation
- 5 fixed video lengths from 5.875 to 14.375 seconds
- 4 aspect ratios (16:9, 1:1, 9:16, 4:3)
- 24 fps frame rate
- Real-time rendering for first 3 reference images
- First and last frame control
- MP4 output saved for 7 days
- Text prompt with reference naming
- Automatic credit refund for failed generations
| - Lip-sync videos to new audio or typed scripts
- Make photos, portraits and characters talk
- Add dialogue to AI-generated video clips from Veo, Kling, Sora
- Dub videos into other languages with matching lips
- Edit or remove spoken words in original voice
- Localize campaigns across multiple markets
- Batch lip-sync CSV rows or folders resumably
- Build sync. into apps with REST API and SDKs
- Integration with Claude Code, Codex, Cursor and other agents
- Cost estimation and approval before paid work
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| What makes it different | - Synced audio and video in a single generation pass
- 8-step distilled model for fast generation in browser
- No installation or GPU required
| - Agent-first approach: works natively with Claude Code, Codex, Cursor and other AI agents
- Plain language commands: describe what you want and the agent picks the matching skill
- Always-approved billing: costs quoted before paid work with user approval required
- Complete end-to-end workflow: from lip-sync to dubbing to localization to API integration
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| Free plan | Not given
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| Open source | Not given
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| Platforms | Not given
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| Public API | Not given
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 4 ▲ +4 (up) since last check | 67 ▲ +1 (up) since last check |
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| Trust Flow (Majestic) | 0 | 12 |
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| Citation Flow (Majestic) | 0 | 42 |
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| Referring domains (Majestic) | 0 | 1145 |
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4 details filled in for both companies.
More alternatives to FastH3 Omni More alternatives to sync.