Short-form video // Comparison
Captions AI is a mobile-first app for adding animated captions, AI effects, and AI avatars to footage you already have. Belken Studio is built script-first: paste a script and it generates a short-form social video with a consistent AI avatar, then posts it directly to your TikTok, YouTube, or Instagram account.
// Facts from belken.ai and captions.ai/pricing, checked 2026-10-17
// The key difference
Captions starts with footage you already have. Belken Studio starts with a script and creates the footage for you.
Captions AI is a mobile app (iOS-first) built around the problem of making existing footage look more polished and reach farther. You record a video on your phone, open Captions, and the app adds animated captions in dozens of styles, trims dead air, adjusts zoom, adds AI effects, and can translate the video into another language with lip-sync AI. On paid plans you can also use an AI avatar ("AI Twin") and clip a long video into a batch of shorter pieces. It has a free tier and is designed around a phone-native editing workflow.
Belken Studio runs in a web browser and starts from a different place: you do not need any footage at all. Paste a script and it generates a short-form video with a consistent AI avatar, burned-in captions, and vertical formatting for TikTok, YouTube Shorts, and Reels. You can also import a long video and clip it into shorts. The output goes directly to your connected social accounts from inside the same tool, without exporting and re-uploading.
If you are already shooting content on your phone and want to edit and enhance it faster, Captions AI is built for that workflow. If you want to create consistent short-form content without ever being on camera, from a browser, with the posting step built in, that is what Belken Studio is designed for.
// Side by side
Belken details from belken.ai. Captions AI details from captions.ai/pricing, checked 2026-10-17. Where a fact was not on a page we read, we left it out.
| Feature | Belken Studio | Captions AI |
|---|---|---|
| What it mainly does | Turns a script into a short-form social video with an AI avatar and captions. Also clips long videos into shorts. Posts directly to connected social accounts. | Adds AI captions, effects, and edits to footage you already have. Also offers an AI avatar, long-video clipping, and video lip-sync translation. iOS-first mobile app. |
| Where it runs | Web browser (desktop and mobile web). | Primarily an iOS mobile app. Captions notes that features and prices reflect iOS plans only. As stated captions.ai/pricing, 2026-10-17. |
| Script to video (no footage needed) | Yes. Paste a script and it renders a short-form video with a consistent AI avatar and burned-in captions. | Yes, with the AI Twin and AI Creator features on paid plans. Primarily designed around footage you already have. |
| AI avatar | Yes. One locked avatar per account. Your whole feed looks like the same consistent creator over time. | Yes. "AI Twin" on Max ($24.99/mo) and Frontier ($69.99/mo) plans. Custom AI avatar from your own face. |
| Captions and caption styles | Yes. Captions are burned in during video generation. Style options are in the Studio app. | Yes. This is a core Captions AI strength: 100+ caption templates on paid plans, 1 on Free. Highly customizable caption styles and animation effects. |
| Long-video clipping | Yes. Import a long video and it clips it into short segments with captions, formatted for TikTok and Shorts. | Yes. "Clips" feature on Max and Frontier plans turns long videos into a batch of post-ready clips. As listed captions.ai/pricing, 2026-10-17. |
| Publish directly to social accounts | Yes. Connect TikTok, YouTube, Instagram, or Facebook Page and post after you confirm each video, from inside Belken Studio. | Not listed as a primary feature on captions.ai as of 2026-10-17. Typical workflow is export and post manually. |
| Video translation / lip-sync | Not listed as a feature on belken.ai as of 2026-10-17. | Yes. "AI Lipdub" and "AI Translate" on Max and Frontier plans translate videos into other languages with lip-sync AI. |
| Voice cloning | Not listed as a feature on belken.ai as of 2026-10-17. | Yes. "AI Voice Clone" on Max and Frontier plans. As listed captions.ai/pricing, 2026-10-17. |
| Free tier | Not listed publicly. Create an account at studio.belken.ai to see current access. | Yes. Free plan: $0, 1 caption template, traditional video editing (trim, zoom, resize, sound effects, transitions), captions in 100+ languages. No AI avatar or AI generation features. |
| Pricing | Shown in the app. No public price on studio.belken.ai. | Free $0, Max $24.99/mo (500 AI credits), Frontier $69.99/mo (1,400 credits), Enterprise custom. Prices from captions.ai/pricing, 2026-10-17. Reflect iOS plans only. Prices change. |
| Who it's designed for | Businesses and creators who want to produce consistent short-form social video from a script, without being on camera, published from one web-based tool. | Creators who are already filming content and want a fast mobile-first app to add polished captions, AI effects, avatars, and reach new audiences through video translation. |
// The honest call
Choose Belken Studio if
Choose Captions AI if
// Questions
Create an account and start in Belken Studio. Paste a script, pick an avatar, and see your first short come out the other side, or import a long video and clip it.
// The person on screen in Studio is an AI avatar.
Prices and features change. We listed only what was on these pages on the date above. Where we could not verify a fact from a page we read, we left it out.