Factare (https://factare.fr/) analyzes content (article, YouTube video, social network post, image or text) to verify its claims and measure its informational fragility.

Analysis in 11 steps in 30 to 60 seconds: decomposition into statements, search for independent sources and then calculation of the “MFS score” (methodology: https://factare.fr/methodologie/mfs-score).
Each statement is scored on a scale of 6 levels, from “Confirmed” to “False”, with a degree of confidence.

A Chrome extension adds a “Fact Check” button on YouTube and an iOS app are available. A public API is documented.

Supported social networks: TikTok, Instagram, X, Facebook, and LinkedIn.

Sharing via url possible (report becomes public with accounts).

Built on the OpenAI API with Web Search (GPT 5).

Note: Reports without an account are public.

Without an account: 1 free scan. With a free account, 3 scans per day.

Sources for testing:

• https://fr.wikipedia.org/wiki/Infox
• https://uneiaparjour.substack.com/p/une-ia-par-jour-lettre-52
• https://www.youtube.com/watch?v=PKIORS4GBeA
• https://factare.fr/methodologie/mfs-score