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Viblo AI is a short-form editor in the browser: it clips highlights from long videos, turns scripts into voiced scenes and lets you finish each short on a timeline. ShortFast starts from a topic, generates a faceless short in one of 27 styles and publishes it to TikTok, Instagram Reels and YouTube Shorts on the schedule you set.
Viblo AI is a short-form editor that works from what you give it (a long video to clip, a social link, a script or a topic) and lets you refine each short on its timeline; ShortFast writes a new faceless short from a topic for every posting slot and posts it to TikTok, Instagram Reels and YouTube Shorts. Choose Viblo to repurpose footage you already have or to build commentary, ranking and split-screen videos yourself; choose ShortFast if the channel should keep posting without anyone making each video.
Each can narrate and caption a script. What differs is who drives each video: Viblo's pages describe you picking the idea, script or footage, then editing and exporting, and its Creator plan lists multi-platform publishing to YouTube, Reels and TikTok. A ShortFast automation picks the next topic itself, keeps the series' tone, format and length, and posts the result or emails it to you.
ShortFast Starter costs $29 a month for 2,000 credits, which is about 80 one-minute stock-footage videos or 50 in an AI art style; Viblo Starter costs $25 a month for 30 short videos and 200 Viblo credits. Viblo offers a 7-day free trial and a 30-day money-back guarantee on the first payment. ShortFast has no free plan; its monthly plans open with a 3-day trial for $1.
Side by side
| Dimension | ShortFast | Viblo AI |
|---|---|---|
| Starting point | A topic or prompt, or a script you paste in; ShortFast writes the script and its hook. | Footage you upload, a YouTube, TikTok or Instagram link, a script, or a topic its script generator turns into a script with hooks. |
| Long videos you already have | Not what it does: it doesn't clip long videos you upload. Your own clips can replace any scene in a generated video; building a whole video from your own footage is coming soon. | Auto-clipping finds the highlights, reframes landscape footage to 9:16, removes pauses and captions what is said. |
| Formats and visuals | 27 styles across three looks: licensed documentary stock footage, AI video, and AI images in a fixed art style (for example stick figures, claymation or Greek statues). UGC-style videos with AI actors. | Text Story, Video Story, commentary over imported clips, top-10 rankings and split screens; AI footage and images from prompts. Templates for listicles, Reddit stories and product rankings; Creator lists gameplay shorts. |
| Voice and captions | 40+ voices. Word-by-word captions burned into the video: 9 styles, 18 fonts, 60+ languages detected automatically. | 35+ ElevenLabs voices on every plan, adjustable in speed, pitch and emphasis, or narration in your tone from a short sample. Auto captions with word-by-word highlighting; bold, minimal, animated or static. |
| Editing | The script is written or pasted before generating. Afterwards you can change captions, B-roll, music, the title and the post text, then render again; re-voicing an edited script isn't possible. | A timeline project editor: trim, reorder and refine clips, fix caption text in line, and retime a voiceover without regenerating the whole track. |
| Length and format | Up to 3 minutes on every plan, or 8 to 15 minutes on Advanced. 16:9 as well as vertical, on every plan. | Starter lists Fast mode up to 60 seconds; Creator adds Pro and Cinematic modes, Business all modes. Its Shorts page describes 1080x1920 exports. |
| Posting | An automation publishes each video to TikTok, Instagram Reels and YouTube Shorts on your schedule, or sends it to you by email. One account per platform per profile, with the same video and caption everywhere. | Creator lists multi-platform publishing to YouTube, Reels and TikTok. Its privacy policy covers uploading to a connected YouTube channel at your request and publishing or scheduling on connected TikTok and Instagram accounts. |
| Pricing and trial | $29, $39 or $99 a month for 2,000, 5,000 or 15,000 credits; 20% to 48% less billed yearly; $10 per extra 1,000 credits. No free plan: a 3-day trial for $1 opens each monthly plan. | $25, $49 or $99 a month for 30, 90 or 200 short videos plus 200, 500 or 1,200 Viblo credits. Its pricing page lists no free plan, offers a 7-day free trial and says sign-up needs no credit card. |
| Refunds | At ShortFast's discretion, per its terms; the $1 three-day trial lets you test first. | 30-day money-back guarantee on the first subscription payment (not renewals, upgrades, add-ons or credit top-ups). Later, only billing errors or a verified technical issue, at its discretion, claimed within 7 days of the charge. |
| Developer access | A REST API, webhooks and an MCP server, with a free API tier of 50 credits every 30 days (3 renders, watermarked, download only). | No developer API is mentioned on its homepage, pricing page or terms. |
Viblo AI changes its product and pricing independently of us. Check their site for current details before deciding, and tell us if anything here is out of date.
ShortFast and Viblo AI plans
Prices from each vendor's pricing page, checked
| Plan | Monthly | Billed yearly, per month | What the plan includes each month (each vendor's own units) |
|---|---|---|---|
| ShortFast Starter | $29 | $15 | 2,000 credits: about 80 one-minute stock-footage or 50 AI art-style videos; 1 automation; 1 social account |
| ShortFast Pro | $39 | $31 | 5,000 credits; 3 automations; 3 social accounts |
| ShortFast Advanced | $99 | $79 | 15,000 credits; 6 automations; 6 social accounts (2 profiles); videos up to 3 minutes or 8 to 15 minutes |
| Viblo Starter | $25 | Promotional; see note | 30 short videos and 200 Viblo credits; Fast mode up to 60 seconds; 35+ ElevenLabs voices; unlimited exports |
| Viblo Creator | $49 | Promotional; see note | 90 short videos and 500 Viblo credits; Fast, Pro and Cinematic modes; brand kits; multi-platform publishing (YouTube, Reels, TikTok) |
| Viblo Business | $99 | Promotional; see note | 200 short videos and 1,200 Viblo credits; all video modes; team access; bulk video creation; analytics and performance tracking |
Viblo figures are its monthly list prices; on October 23 its pricing page showed annual prices under a limited-time discount banner, which we leave out because offers change. Viblo credits and ShortFast credits don't convert, ShortFast's video counts are estimates, not limits, and Viblo's refund policy says its unused credits don't roll over unless the plan says otherwise.
Sources: ShortFast pricing · Viblo AI pricing · Viblo AI refund policy
Viblo is at its best when the footage already exists. Upload a stream, a podcast or a long video, or paste a YouTube, TikTok or Instagram link, and auto-clipping brings the strongest moments to the top, reframes them to vertical, cuts pauses and captions the speech. For script-based channels, Video Commentary turns each line of a script into a scene, Video Ranking orders clips into countdowns and split-screen layouts keep several visuals on screen at once. Everything stays editable on a timeline, and the Business plan adds team access, bulk video creation and performance tracking.
If most of your shorts come from footage you already have, or you enjoy cutting each one yourself, Viblo is the better pick. ShortFast doesn't clip long videos you upload, and its analytics are still coming soon.
ShortFast suits a channel that must keep posting on days you never open an editor. Set up an automation once: a series brief of up to 500 characters, a schedule, a voice and a style. At each slot it picks a fresh topic, checks recent titles, and produces a new script, title, description and footage in the series' tone, format and length, then posts it or sends it to your inbox. Nothing waits for approval, so review the first episodes before you leave it alone.
No footage of your own is needed. Its 27 styles cover licensed documentary stock footage, AI video and AI images in a fixed art style (comic book, anime and classical painting among them), and ShortFast also makes UGC-style ads with AI actors. An uploaded clip can still go into any scene, and scripts end with a call to action you choose when you write one into the brief.
Automation doesn't exempt a channel from platform rules. On YouTube, the monetization policies rule out channels where content “feels interchangeable from video to video”, and the spam policy names “using automated tools or AI to churn out high volumes of similar content with minimal changes”. On TikTok, realistic AI-generated content needs a label, and Viblo's own terms forbid passing its output off as human-made where a law or platform policy requires AI disclosure. Vary the topics in any series, and check its first videos before you let it run.
On October 23, 2026, Viblo's pricing page listed Starter at $25 a month, Creator at $49 and Business at $99, with 30, 90 and 200 short videos and 200, 500 and 1,200 Viblo credits a month. Those credits power its AI video, voiceovers and images. Annual prices sat under a limited-time discount, so this page compares monthly list prices.
ShortFast Starter is $29 a month, or $15 billed yearly, for 2,000 credits, and what that buys depends on the style: about 24 credits covers a minute of stock-footage video, 37 a minute in an AI art style and 440 a minute of AI video. Pro is $39 against Viblo Creator's $49, and both top plans are $99. The two credit systems don't convert; compare what the videos you'd publish would cost on each.
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A template editor for fake-text and Reddit-story videos that people weigh against Viblo.
Learn moreComparisonClipping long videos you already have, against generating new ones from a topic.
Learn moreGuideScheduling finished videos, against an automation that also makes them.
Learn moreGuideGenerators that also publish for you, reviewed together.
Learn moreDevelopersDrive video generation from your own code, Claude, Cursor or other agents.
Learn moreThree days of full access. If Viblo AI suits you better, that's a useful thing to find out cheaply.