Repurpose.io moves your videos from one platform to another. It doesn't turn them into written posts. If that's what you need, the main options are Castmagic (best for podcasts), Reshaper AI (best for LinkedIn, Instagram, X, Threads, and Substack posts in your own voice), Supergrow (best if you only care about LinkedIn), and ChatGPT or Claude (cheapest, if you're happy to write prompts).
Here's how each one turns a video into text, what it costs, and who it fits.
Repurpose.io is a distribution tool. You connect your accounts, and when you post a video on one platform, it can republish it on others automatically. It's good at that.
But a TikTok reposted to LinkedIn is still a video. Lots of people get more out of LinkedIn, X, Threads, and Substack with written posts. And to get those from a video, something has to:
That's a writing job, and it needs a different kind of tool.
| Question | Why it matters |
|---|---|
| What can I put in? | A YouTube link, a video file, audio, or just pasted text? |
| What does it write? | LinkedIn posts, threads, captions, newsletters, show notes? |
| Does it sound like me? | Can it learn your voice, or does every post sound the same? |
| Does one video become one post or many? | Good tools pull out several ideas, not one summary. |
| Can I still post videos too? | If you need both, you may keep Repurpose.io and add a writer. |
You upload an audio or video recording, and Castmagic writes show notes, summaries, key quotes, social posts, and newsletter drafts from it. You can make your own templates for the outputs you use most.
Good for: podcasters, people who record interviews, webinars, or calls.
Not for: people whose content doesn't start as a recording.
Pricing: Hobby $19 a month, Starter $48, Team $139, all billed yearly. No free plan listed. (Castmagic)
You give Reshaper AI a YouTube link, an Instagram Reel, a Substack article, a LinkedIn post, or your rough notes. It writes LinkedIn posts, X posts and threads, Threads posts, Instagram captions, Substack Notes and articles, and carousels. On paid plans, it writes in your saved voice. Posts can be scheduled through Buffer.
Good for: creators who make videos and want written posts that sound like them, on more than one platform.
Not for: cutting clips or reposting videos. It doesn't do either. You'd keep Repurpose.io or a clipping tool for that.
Pricing: free to try with 10 credits. Creator is $49 a month and Pro is $149 a month (on sale for $25 and $99 until December 31, 2026). A LinkedIn post from a YouTube video costs 2 to 5 credits, depending on the video's length.
Supergrow is a LinkedIn tool. It can turn a YouTube video, article, or PDF into LinkedIn posts, and it also has a carousel maker, scheduling, and analytics. Its "Postcast" feature interviews you and writes posts from your answers.
Good for: people who focus on LinkedIn and want writing and scheduling in one place.
Not for: other platforms. It's LinkedIn only.
Pricing: Pro $39 a month ($31 yearly), 7-day free trial. (Supergrow)
Paste a transcript into ChatGPT or Claude and ask for a LinkedIn post, a thread, or a newsletter. With a good prompt and a few of your own posts as examples, the results are solid.
Good for: people who post a few times a week and don't mind a bit of setup each time.
Not for: people who want it automatic. You'll get the transcript yourself, paste your style each time, and post by hand.
Pricing: free plans, paid plans around $20 a month.
Descript is a video and audio editor that works like a document: you edit the transcript, and the video changes. Its AI assistant can also write show notes, summaries, and social posts from your recording.
Good for: people who edit their own videos or podcasts and want the writing in the same app.
Not for: people who just want posts. It's a full editor, so there's more to learn.
Pricing: free plan with limits, Hobbyist $24 a month ($16 yearly), Creator $35 a month ($24 yearly). (Descript)
| Tool | What you put in | What it writes | Learns your voice | Starts at |
|---|---|---|---|---|
| Castmagic | Audio or video file | Show notes, posts, newsletters | Custom templates | $19/mo (yearly) |
| Reshaper AI | YouTube link, Reel, article, notes | LinkedIn, X, Threads, Instagram, Substack, carousels | Yes (paid plans) | Free, then $49/mo |
| Supergrow | YouTube, article, PDF, interview | LinkedIn posts, carousels | Yes | $39/mo |
| ChatGPT / Claude | Pasted transcript | Anything you ask for | Only if you paste examples | Free, then ~$20/mo |
| Descript | Video or audio you edit | Show notes, posts | Not its focus | Free, then $24/mo |
| Repurpose.io (for comparison) | Published videos | Short captions only | No | $35/mo |
Often, add. Repurpose.io and a writing tool do different jobs:
No. Repurpose.io can repost your videos to LinkedIn and write short captions, but it doesn't turn a video into a full written LinkedIn post.
It depends where you post. Reshaper AI covers LinkedIn, X, Threads, Instagram, and Substack from a YouTube link. Supergrow is good if you only post on LinkedIn. ChatGPT or Claude work if you paste the transcript yourself.
Yes. Copy your transcript from YouTube and paste it into the free version of ChatGPT or Claude with clear instructions. Reshaper AI and Descript also have free starts with limits.
Only if you don't need your videos auto-posted to other platforms. If you do, keep it and add a writing tool for text posts.
Not well. Tools that repost videos and tools that write posts are built for different jobs. Most creators use one of each.
Turn one piece of content into posts for every platform in seconds.