Merlin AI vs Claras: a browser assistant and a video tool
Merlin AI is a general assistant in your browser, with chat, writing help and many AI models in one place. It summarizes YouTube videos too. Claras only works on video, and goes further with it.
Claras vs Merlin, side by side
Merlin does far more than video. This table sticks to what each does with a video, plus the main things only Merlin does.
| Claras | Merlin | |
|---|---|---|
| Best at | Getting a transcript, summary, chapters and answers from videos | Being one AI assistant on every web page: chat, research, writing and translation |
| A YouTube video | Paste the link in the app, or open the video with the Chrome extension | A summary from its extension on YouTube, or by pasting the link, with timestamps of the key moments |
| Summary styles | An overview, key takeaways and chapters, written in one of 15 languages | Key Insights grouped by topic, Essays in paragraphs, and timestamped breakdowns |
| Full transcript | Every word with timestamps, to read in the app or download | A YouTube transcript feature in its extension |
| Videos with no captions | AI transcription, up to 30 minutes free and 3 hours on a paid plan | Not stated on the pages we could read |
| Asking questions | Ask AI answers from the transcript and usually gives the timestamp, for one video or many | Chat about web pages, files and videos in its side panel |
| Instagram and TikTok | Paste the link, for videos up to 30 minutes | Not mentioned on the pages we read |
| Many videos at once | Bulk Summaries reads a playlist or YouTube search page and gives you one summary | Projects turn files, links or a knowledge base into a custom assistant |
| Your own files | Video and audio uploads, up to 6 hours per file | PDFs, documents and images in the side panel |
| Bilingual subtitles | Not offered | Subtitles in two languages on YouTube videos |
| Beyond video | Nothing. Claras only works on videos and recordings. | Writing help in Gmail and on other sites, translation, an AI detector and humanizer, code and diagrams |
| AI models | Chosen for you. In the Chrome extension, on a paid plan, you can use your own OpenAI, Anthropic or Gemini key. | Pick from models by OpenAI, Anthropic and Google in one place |
| Apps | Web app and Chrome extension | Chrome extension and web, plus iOS, Android and Windows with one account |
| Export | TXT, plus .srt in the web app and PDF in the extension | Not described on the pages we read |
| Free plan | 3 videos a month and 1 bulk run, no card needed | A free account. Its Chrome listing notes in-app purchases. |
| Paid plans | See Claras pricing | We couldn't read its pricing page. Check getmerlin.in for current prices. |
Merlin's own site blocks automated visits. We read its Chrome Web Store listing and feedback board directly, and its site pages through search results, on 11 November 2026. Details can change. Sources: Merlin on the Chrome Web Store, Merlin home page, Merlin feedback board, Merlin YouTube transcript, YouTube summariser update.
The main differences, explained
What each one is really for
Merlin AI is a general assistant. You press Ctrl+M or Cmd+M on any page and a side panel opens, where you can chat with models from OpenAI, Anthropic and Google, ask about the page you are on, rewrite text, translate, or work with a PDF. Summarizing YouTube videos is one of many jobs it does, and it does it with timestamps of the key moments, in a few summary styles.
Claras only does video, so this page compares the one part where they overlap: what each does with a video. Claras gives you the full transcript, a summary, chapters that jump to their moment and Ask AI, and it handles cases Merlin's pages don't mention, such as videos with no captions, Instagram and TikTok links, uploaded recordings and whole playlists. It can't help you write an email or read a PDF.
The same job in each: a one-hour YouTube lecture
In Merlin, you open the video and use the summarize button from its extension, or paste the link into Merlin's chat. You get a summary with timestamps of the important moments, in the style you choose: Key Insights grouped by topic, or Essays written as paragraphs. You can then chat about it, and switch the model you are chatting with.
In Claras, you sign in with a free account and paste the link, or open the video with the extension. If the video has captions, Claras reads them. If it has none, Claras transcribes the audio with AI, up to 30 minutes on the free plan and 3 hours on a paid one. You get the full transcript with timestamps, a summary, chapters and Ask AI, whose answers usually give the timestamp. YouTube Shorts and live links don't work yet.
Three jobs where the difference shows
- A two-hour interview with no captions. Claras transcribes it with AI on a paid plan, then summarizes it. The Merlin pages we could read don't say what happens when a video has no captions.
- A course playlist of 25 videos. Bulk Summaries reads the playlist and gives you one summary of what it covers. We found no playlist summary on Merlin's pages, though its Projects can hold many sources.
- Writing up what you watched. Merlin is stronger here. It can draft the email in Gmail or the post on the site you are on. The Claras extension can draft social posts from a video, and Claras can hand the transcript to Claude, ChatGPT, Gemini or Perplexity with Send to AI.
What each costs
We couldn't read Merlin's pricing page, as its site blocks automated visits, so we haven't compared prices. Its subscription pays for a whole assistant, of which video is a small part. If you already pay for Merlin and only summarize the odd video, its summaries may be all you need. If video is most of what you use AI for, a tool built for it does more with each one. Claras prices are on the pricing page, and the free plan needs no card.
Where Merlin is stronger
- Range. Chat, writing, translation, PDFs, images and web pages in one tool. Claras does video only.
- Model choice. Switch between models from OpenAI, Anthropic and Google in one chat.
- Writing where you are. Help in Gmail, on social sites and in editors, with no copying across.
- Bilingual subtitles. Subtitles in two languages on YouTube. Claras doesn't do this.
- Apps. iOS, Android and Windows with one account. Claras is a web app and a Chrome extension.
Where Claras is stronger
- Videos with no captions. AI transcription up to 3 hours on a paid plan.
- The full transcript. Every word with timestamps, to read, search with Ask AI or download.
- Chapters. Clickable chapters that jump to that point in the video.
- More sources. Instagram and TikTok links, and your own recordings up to 6 hours.
- Many videos at once. One summary of a playlist or a YouTube search page.
Prefer your own models in Claras too? The Chrome extension lets you use your own API key on a paid plan. Or go back to all comparisons.
Who should choose which
Choose Merlin if
- You want one AI assistant for most of what you do in a browser, and video summaries are one need among many.
- You write a lot online and want help on the page you are on.
- You like switching between AI models.
- You want the same assistant on your phone and desktop.
For this kind of use, Merlin is the better pick, and Claras isn't a replacement for it.
Choose Claras if
- Video is the main thing you use AI for: lectures, interviews, tutorials or research.
- You need the whole transcript, not only a summary.
- Your videos are long, have no captions, or come from Instagram, TikTok or your own files.
- You work through playlists or many videos on one topic.
If you mostly want quick summaries
For a short summary of a captioned video now and then, both do the job. Try each on the same video and keep the one whose summary you trust more.
Using both, or moving across
Using both
This is a natural pair. Keep Merlin as your everyday assistant, and use Claras when a video needs more than a quick summary: a long lecture, a video with no captions or a whole playlist. Both work as Chrome extensions on YouTube. We found no direct connection between them, but a Claras transcript is plain text, so you can download it or copy it and paste it into any chat, Merlin's included.
Moving from Merlin to Claras
There is little to move. Paste the same video links into Claras to get transcripts, summaries and chapters. If you rely on Merlin for writing, PDFs or chat, keep it, as Claras won't cover those.
Moving from Claras to Merlin
Download the transcripts and summaries you want to keep. Merlin works from the video page or a link, so you would summarize each video again. We found no Merlin equivalent of summarizing a playlist at once.
Merlin and Claras: common questions
What is Merlin AI?
A general AI assistant that runs as a Chrome extension and on the web, iOS, Android and Windows. It lets you chat with models from OpenAI, Anthropic and Google, ask about web pages and files, rewrite and translate text, and summarize YouTube videos.
Can Merlin AI summarize YouTube videos?
Yes. Its extension summarizes a video with timestamps of the key moments, in styles such as Key Insights and Essays, and you can chat about it.
Does Merlin give you the full transcript?
Its Chrome extension has a YouTube transcript feature. We couldn't check its export options because the site blocks automated visits. Claras shows the full transcript with timestamps and lets you download it as TXT, plus .srt in the web app and PDF in the extension.
Is Merlin AI free?
You can sign up for free, and its Chrome listing notes in-app purchases. We couldn't read its pricing page, so check getmerlin.in for current limits and prices. The free Claras plan gives you 3 videos a month with no card.
Which AI models does each use?
Merlin lets you pick from models by OpenAI, Anthropic and Google. Claras picks the model for you. In the Chrome extension, on a paid plan, you can add your own OpenAI, Anthropic or Gemini key.
Claras vs Merlin: which is better for students?
For lectures on YouTube, Claras, because you get the full transcript, chapters that jump to the moment and answers with timestamps. For reading papers and writing essays, Merlin covers more, since it works on PDFs and web pages and helps you write.
Can I use Merlin and Claras together?
Yes. Use Merlin as your everyday assistant and Claras for long or caption-less videos and playlists. You can copy a Claras transcript into a Merlin chat if you want to work on it there.
Watch less. Learn more.
Paste a video link and get the summary, chapters and answers in seconds.