Silestis vs Otter.ai
Both transcribe speech — but they're built for different jobs.
Otter.ai is a meeting-first assistant: it joins your calls, records them, and produces live notes and summaries. It's a strong fit when your core need is capturing meetings in real time.
Silestis is built for any audio and video — paste a YouTube, Vimeo, or podcast link, or grab a video with the browser extension. You get a timestamped transcript you can search and chat with, plus notes, chapters, and flashcards. If your knowledge lives in lectures, webinars, and web video rather than calendar meetings, that's where Silestis is stronger.
| Silestis | Otter.ai | |
|---|---|---|
| Built around | Any web video & audio | Live meetings |
| Transcribe any web video (YouTube, 1800+ sites) | Yes | No |
| Browser extension for any video page | Yes | Meetings only |
| Timestamped AI answers ([mm:ss]) | Yes | Chat |
| Joins & records live meetings (bot) | No — not a meeting bot | Yes |
| Speaker diarization | ||
| Notes, chapters & flashcards | Yes | Meeting summaries |
| Languages | 100+ with translation | Fewer |
| Data hosting | EU (Cloudflare) | US |
When to use which
- Choose Silestis for web video, lectures, webinars, and podcasts — with timestamped answers and EU hosting.
- Choose Otter if you mainly need a bot to join and record live meetings.
See also: vs NotebookLM · vs Notta. Or explore use cases for webinars and lectures.
Comparison based on publicly available information; competitor features may change over time.
Otter.ai — FAQ
Is Silestis a good Otter alternative?
If your audio lives in web videos, lectures, podcasts, and uploads rather than live meetings, yes. Silestis transcribes any web video, gives timestamped answers, and is EU-hosted. Otter is stronger if your main need is a bot that joins and records live calls in real time.
Does Silestis join my meetings like Otter?
No. Silestis is intentionally not a meeting bot. You upload a recording or paste a link, which keeps it flexible across any audio or video — not just calendar meetings.
Where is my data stored?
Silestis processes audio in the EU on Cloudflare, deletes source files after transcription, and never uses recordings to train AI models.
Every video you watch could be searchable.
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