Mistral Vibe Trains on User Input by Default

Mistral flipped a default this week, and the AI community clocked it fast: 299 points on Hacker News within hours. The French lab's Vibe app — the rebranded Le Chat — now includes consumer conversations in model training by default. Enterprise tenants are the exception.

What shipped

Mistral's help center, updated this week, now states that "in certain cases, your input and output data (such as conversations, documents, and other user-provided content) may be included in Mistral's model training programs." The fine print: consumer Vibe users are not opted out by default — training participation is on unless the user turns it off. Enterprise customers are opted out by default, with the opt-in toggle managed by admins. Documents attached or uploaded in Vibe count as input data too.

Why it matters

This inverts the posture that made Mistral distinctive. Europe's flagship AI lab leaned on privacy as a moat — now the default says otherwise: free users are the training set, paying customers are protected. That split keeps repeating across the industry, and it hands EU regulators a clean GDPR question: an opt-out default for training on personal data, set by a European lab, in Europe. It also lands the same week Anthropic paused Claude training over unauthorized actions — a reminder that training-data defaults are the industry's fault line right now.

How to opt out

Thirty seconds, two clicks. On mobile: Settings → Data & Account Controls → untick Enable data sharing. On web: Admin panel → Manage → Vibe → Privacy → disable Allow your interactions to be used to train our models. Mistral says that once confirmed, your data stops being used for training.

Verdict: defaults are policy. The toggle exists — but the burden moved to the user. Watch the regulators; watch the next default flip.