Does DeepL train AI on your data?
Yes
“We process the content you upload and their translations or improvements for a limited period of time to train and improve our neural networks and algorithms.”
From DeepL's privacy policy , checked Oct 28, 2026. In Translation, 1 of 4 tools whose policies answer this say they don't train on customer content.
The rest of the data policy
Data retention
Texts and documents deleted after the contracted services are fully performed
“After complete performance of the contractually agreed services all submitted texts or documents and their translations or improvements will be deleted.”
Where data is stored
Not stated
Security and compliance
Similar tools that say they don't train on your data
“We do not use Customer Data or Personal Data submitted through these features to train general-purpose AI models, except as expressly disclosed otherwise and authorised by the Customer or user.”
DeepL and your data: common questions
Does DeepL use my data to train AI?
Yes. DeepL's policy says: "We process the content you upload and their translations or improvements for a limited period of time to train and improve our neural networks and algorithms." (checked Oct 28, 2026).
How long does DeepL keep my data?
Texts and documents deleted after the contracted services are fully performed. The policy says: "After complete performance of the contractually agreed services all submitted texts or documents and their translations or improvements will be deleted."
What security certifications does DeepL have?
Its security pages list SOC 2 Type II, GDPR.
Which translation tools don't train on your data?
Among the closest alternatives, Lokalise say in their policies that they don't use customer content for training.
Business plans often carry different terms than free and individual plans. We record what the public policy says; the quote shows which plan it covers. See DeepL's full profile or how other AI tools compare.