Verification inside the apps people already use.
The verification layer for social networks and messengers: your platform keeps its interface and its users, Gretchen does the checking.
Your app. Our verification.

Via REST API, inside sharing, reporting or moderation.
Image, video, voice and claims, automatically.
The result appears in your own design, with a report and sources.
Learn more: EU AI Act, DFKI, scope
Gretchen supports platforms in labelling AI-generated content under Article 50 of the EU AI Act, with a report for every decision.
A spin-off of the German Research Center for Artificial Intelligence (DFKI).
Here, people ask Gretchen about something they have seen. Checking every upload before it goes live is content moderation.
Gretchen provides the verification. The platform provides the experience.
Three checks, right in the chat
Forward a post, get the answer in the same chat.
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GretchenFact check
1:06Is this true?
I checked a claim in the video. Official documents contradict it.
Full analysis →Contradiction foundVideo → claims → official sources contradict -
GretchenFact check

Is this image real?
The image shows clear traces of AI. The heatmap shows where they are.
Full analysis →AI traces foundImage → AI traces → heatmap -
GretchenFact check
1:06Can you check this?
I found two claims and researched sources for them.
Full analysis →ResearchVideo → claims → sources
Example cases for illustration. The result excerpts come from the results page Gretchen used during the Berlin elections 2026.
Made to look real

Convincing on a phone, even more so after compression.

A few seconds of audio are enough for a clone.

A fake spreads within hours.
What our detectors are built for
Our detectors are built for material as it is shared: compressed, cropped, forwarded.
Every answer shows its sources
Real or fake is not enough. Context decides.
Fact-checks, official bodies and earlier copies are linked.
Discover more
People can follow the reasoning themselves instead of having to trust a verdict.
Proven in real elections

“Die Gretchenfrage” for the State of Berlin, via Instagram and WhatsApp.

First your own assessment, then the result, via Instagram message.
Do you run a platform or a messenger?
We show you live how Gretchen works with your material.
Book a demo