AI Reel Generator
Turn an idea, a doc, or a video you love into a vertical reel. Add your brand assets so it looks like yours. Try it free.


Make reels that look like your brand
Syren scripts, designs, and voices your reel, ready for Instagram, TikTok, or YouTube Shorts.
Turn an idea, doc, or video into a reel

- Start with a sentence, and Syren asks if it needs more
- Attach docs, decks, images, videos, or YouTube links as context
- Get kinetic type, motion graphics, voiceover, and music in one go
Make vertical reels in your brand’s style

- Upload your logo, brand guidelines, or website for the best results
- Syren matches your colors and visual style in every scene
- Pick Tall 9:16, or remix a ready-made vertical example
Change anything by asking

- Ask for a new script, voice, music, or visual style
- Drag the playhead to a moment to show Syren what to change
- Select any heading or image to move or retype it yourself
Download it, then post it anywhere

- Choose Wide 16:9 or tall 9:16 before you send your prompt.
- Post it to Instagram Reels, TikTok, or YouTube Shorts
- Share a link with your team to review before you post
How to make Instagram Reels with AI
Four steps from your idea to a finished vertical reel, ready to download.
1. Open Syren and pick Tall 9:16
Select Syren under Tools, choose Tall 9:16, then describe your reel, including audience, tone, visual style, narration, and music.
2. Add your material and send
Optionally select + to add a document, image, video, PowerPoint file, or YouTube link, then select Send.
3. Refine the live preview
Watch Syren build your reel, then ask it to change the script, voice, music, or a scene’s style.
4. Generate and download your reel
Select Generate, pick a resolution up to 1080p, and download your reel, ready to post.

The AI reel generator trusted by modern teams
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Reels for every story you want to tell
From a quick tip to an origin story, our AI reel generator turns your ideas and docs into vertical reels in minutes.
Announce a new feature with a short reel that shows the problem it solves and how it works, using simple interface visuals.
Teach a useful tip in a fast reel with bold on-screen text, then show viewers how to put it to use today.
Turn a month of small product updates into one quick reel, so followers catch everything they missed.
Promote a webinar, launch event, or conference with a reel that covers what’s happening, when, and why it’s worth showing up.
AI reel generator FAQs
How does the AI reel generator work?
You describe your reel in Syren, Synthesia’s AI video agent, and it builds the video for you. Syren writes the video as code and renders it live, so you can watch the preview take shape. Syren is in beta, and you can refine the result by chat or by editing elements directly.
Is the AI reel generator free?
Yes, you can start making reels with Syren for free. Videos on the free plan include a Synthesia watermark. Availability varies by region, and the pricing page has the latest credit and plan details.
What can I use to create Instagram Reels with AI?
You can use an AI reel generator like Syren. Describe the reel in a sentence or two, add your logo, brand guidelines, or website for the best results, and attach any docs, images, or videos for context. Syren builds a vertical video ready for Instagram, TikTok, or YouTube Shorts.
How long can an AI reel be, and what shape does it come in?
A reel from the AI reel generator can run up to three minutes, in Tall 9:16 or Wide 16:9. You choose the shape before you send your first prompt, and you can’t choose it if you start from an example video. Instagram sets its own limits for reels, so check them before you post.
Can I post my reel straight to Instagram, TikTok or YouTube?
No, Syren doesn’t post directly to Instagram, TikTok or YouTube. Select Generate, choose a resolution up to 1080p, download your video, and upload it to your chosen platform yourself.
Can I edit my reel after the AI reel generator makes it?
Yes, you can edit your reel two ways. Ask Syren in chat to change the script, voice, music, shot types, aspect ratio, or pronunciation, or select an element and drag it, retype it, or give it an instruction like “fade this in at 2s”. Undo and redo reverse every change, yours and Syren’s.
Can I use reels made with Syren commercially?
Yes. You own the reels you make with Syren and can post them on Instagram, TikTok, YouTube, or anywhere else, including as ads. Make sure you have the rights to anything you upload, such as images, footage, or logos.
Can I use my own Avatar, voice, or brand in a reel?
Syren reels can include Synthesia’s stock avatars and voices, and you can swap them by asking in chat. To use your own Personal Avatar or a cloned voice, create the video in Synthesia Studio. For your brand, add your logo, brand guidelines, or website with your prompt, and Syren matches your colors and visual style in every scen
How is the AI Instagram Reel generator different from Synthesia Studio?
Syren is prompt-driven and built for fast, creative video like reels. Studio is built for content where the message has to be exact and repeatable. The marketing video maker in Studio also has optional auto subtitles and five aspect ratio presets, which Syren doesn’t list.
Not just an AI reel generator
Synthesia is an end-to-end AI video platform for creating, localizing, and managing video at scale. Syren builds reels from a prompt, AI motion graphics add on-brand motion and visuals, and the marketing video maker adds aspect ratio presets and optional auto subtitles.
Then translate every video into new languages, record your product with the AI screen recorder, and refine it all in the AI video editor. One platform, from the first prompt to every audience.
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Join 2M+ users today and go from idea to vertical reel with Syren.