Writing and grammar AI tools: privacy compared for small businesses (4 tools)
We checked 4 writing and grammar tools against each vendor’s own pages. 4 train on your data by default on at least one plan, and 4 have a plan that isn’t used for training by default. Every answer has a source link and the date we checked it.
Grammarly
by Grammarly · 3 plans checked
- Used for training: Free, Premium, and single-user Pro: used by default, unless you turn it off.
- Used for training: Team accounts bought on the website: used at first, until an admin opts out.
- Not used for training: Business, Education, Pro, and Enterprise bought through Sales: not used by default.
Checked October 23, 2026QuillBot
by QuillBot · 2 plans checked
- Used for training: Free and Premium: used, unless you opt out.
- Not used for training: Team Plan: not used.
Checked October 24, 2026DeepL
by DeepL · 2 plans checked
- Used for training: DeepL Translator (free): used, for a limited period.
- Not used for training: DeepL Pro (paid plans): not used.
Checked October 23, 2026Wispr Flow
by Wispr · 2 plans checked
- Used for training: Free, Pro, and Teams: used, unless you turn it off.
- Not used for training: Enterprise: not used, and it cannot be turned on.
Checked October 23, 2026
Questions
- Which writing and grammar tools train on your data by default?
- Grammarly, QuillBot, DeepL, and Wispr Flow use your data to train AI by default on at least one plan. Each tool’s page shows whether you can turn it off.
- Which have a plan that isn’t used for training by default?
- Grammarly, QuillBot, DeepL, and Wispr Flow.
- How do we check these answers?
- We read each vendor’s own pages. Every answer links to the page we read and shows the date we read it. See how we check.
- How often are they checked?
- We recheck the vendors’ pages every week and log every change in the change log.
- Is this legal advice?
- No. It is practical guidance, not legal, compliance, or professional security advice.
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