Sonix: our review
Sonix transcribes and translates audio and video files uploaded by the user, in about fifty languages, with no human-review option at all. It's a fully automated tool, hosted in the United States, worth comparing to HappyScribe and Amberscript, which both sell paid human proofreading.
What we take away from it
What counts in its favor
- 30 free minutes when you create an account, no credit card required, to test accuracy on a real file before paying anything.
- Translation is included in the same workflow as transcription, in more than 55 languages, with no need for a third-party tool to subtitle a video in several languages.
- The privacy policy explicitly rules out using customer content to train the service's machine-learning or generative-AI models.
What counts against it
- No human review, at any price: for a document that must come out error-free, HappyScribe and Amberscript both offer manual correction, Sonix does not.
- Data is hosted in the United States on Amazon Web Services, with standard contractual clauses for transfers outside the European Economic Area — a transfer you must accept, with no alternative of European storage.
- No specific retention period: the policy simply says it keeps data 'for as long as needed for the purposes', the same vague wording as Otter's.
- The list of sub-processors isn't published by name, only described by category (hosting, payment, email delivery), unlike Fireflies, which publishes its own.
A sound choice for transcribing and translating fast, at low cost, when no sensitive data is at stake. Avoid it for an interview or a board meeting that must stay in Europe, or that requires human review before release.
The facts
- First paid tier
- $25/month — Core
- Data hosting
- Data in the United States · source
- Categories
- Transcription,Translation
- Data verified on
- 30 July 2026
What happens to your data
- Is your data used to train their models?
- Subprocessors
- Not named individually: the privacy policy describes them by category (hosting and cloud computing, email delivery, database management, payment processing). Hosting is confirmed to be on Amazon Web Services.
- Retention
- No precise period is published: data is kept "for as long as needed to fulfill the purposes" of the privacy policy, or longer if the law requires it.
Sonix in detail
Sonix transcribes and translates audio and video files uploaded by the user, in about fifty languages, without ever involving a human in the chain. It's the most automated of the three transcription tools compared in this category, and the only one hosted outside Europe.
What it actually does
An uploaded file — a recording, a filmed conference, a podcast — comes back transcribed with timestamps, and can then be translated into more than 55 languages without switching to another tool. The publisher claims an accuracy close to 99% on clean audio, a figure that, as with its competitors, remains a marketing claim rather than an independent measurement. A built-in editor lets you correct the text directly, which updates the audio in turn, and read-only sharing tools cover collaborative work. No feature joins a live video call: uploading a file, via the website or the mobile app, remains the only entry point.
Why it interests us, with one clear reservation
Sonix states in its privacy policy that it does not use customer content to train its machine learning or generative AI models, a commitment that matches Amberscript's and HappyScribe's. But hosting changes everything: the data stays in the United States, at Amazon Web Services, with standard contractual clauses for transfers from the European Union — whereas Amberscript and HappyScribe host their servers in Europe. For an accounting firm or a legal practice handling an interview or a board meeting — that is, often personal and sometimes sensitive data — this hosting choice weighs more heavily than the engine's speed. Sonix remains relevant for training or multilingual marketing content, where the confidentiality stakes are lower.
Where it falls short
No human review exists, at any price: for a document that must come out flawless, this is an option that both HappyScribe and Amberscript offer, not Sonix. Data retention isn't defined precisely — the privacy policy limits itself to a formula as vague as Otter's, "as long as necessary for the purposes." And the list of subcontractors isn't published by name, only described by category, which makes it impossible to verify exactly who processes the recordings.
Our recommendation
Sonix suits transcribing and translating quickly and cheaply content with no confidentiality stakes. For a professional interview, a board meeting or any document that must stay in Europe or go through human review, HappyScribe or Amberscript are the better fit.
Who it's for, and who it isn't
Suited for
- A content creator or marketing team that needs to subtitle and translate videos into several languages, with no confidential document at stake
- A small organization that wants to test for free before paying, with no permanent free-tier commitment
Not a fit
- A firm or public body that must keep its recordings in Europe, or that needs human review of a sensitive document
- An organization that needs a precise, verifiable retention period for its archives
Frequently asked questions
- Does Sonix offer an assistant that joins my meetings?
- No. Sonix works exclusively by uploading an audio or video file, including through its mobile app, which records and then syncs the file to the platform. No feature joins Zoom, Teams or Google Meet live, unlike Otter or Fireflies.
- Is there a human-review option at Sonix?
- No, and that's the main difference with HappyScribe and Amberscript: Sonix remains a fully automated service, with no paid option for correction by a human transcriber, whatever tier you subscribe to.
- Where is data hosted with Sonix?
- In the United States, on Amazon Web Services, according to the vendor's security page. Transfers from the European Economic Area or the United Kingdom rely on standard contractual clauses, not on local storage.
- How much does Sonix cost for a small team?
- The Core tier is $25/month for 5 hours of transcription and translation, or $275/year. A pay-as-you-go rate also exists, at $10 an hour with no subscription. The first 30 minutes are free, with no credit card.
- What's the difference with HappyScribe or Amberscript?
- HappyScribe and Amberscript host in the European Union and both sell paid human review; Sonix hosts in the United States and stays fully automated, without that option, which makes it less suited to a confidential document that must come out error-free.
Our sources
- Pricing pageaccessed on 30 July 2026
- Privacy policyaccessed on 30 July 2026
- Security and data protectionaccessed on 30 July 2026
- Features pageaccessed on 30 July 2026
Prices and hosting terms change often. We recheck them periodically, but the publisher's page remains the only up-to-date reference.