Mistral AI uses the messages you type and the AI's responses from the free version of Le Chat to train its AI models, unless you actively opt out in your account settings. Paid enterprise and API customers are automatically excluded from this.
This analysis describes what Mistral AI's agreement states, permits, or reserves. It does not constitute a legal determination about enforceability. Regulatory applicability and practical outcomes may vary by jurisdiction, enforcement context, and individual circumstances. Read our methodology
The clause establishes a data utilization practice that differentiates service tiers: model training on user interactions occurs only for free-tier users who have not exercised an opt-out mechanism. This operational distinction creates separate data handling pathways based on subscription status and user election.
Your chat prompts and AI responses on the free tier are used to train Mistral AI's commercial language models, meaning personal information you share in conversations could influence future AI outputs unless you opt out via account settings.
How other platforms handle this
After registration, you may create, upload or transmit files, documents, videos, images, data or information as part of your use of the Service (collectively, "User Content"). This includes any inputs you provide to our AI-powered support tools and outputs generated in response to your inputs. User ...
You are responsible for your use of the Services and for any Content, including anything referenced therein, you provide, create, post, or otherwise utilize, including any inputs, prompts, outputs, and/or information obtained or created through the Services.
Only models with a post-mitigation score of "medium" or below can be deployed. Only models with a post-mitigation score of "high" or below can be developed further.
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"To train our artificial intelligence models (large language models) to answer questions, generate text, translate, summarize and correct text, classify text, analyze feelings, etc. according to context, Inputs (e-mails, letters, reports, computer code, etc.) and Outputs. [...] Your Input and Output, subject to your opt-out. Please note that we do not use your Input and Output to train our artificial intelligence models when you use Le Chat Enterprise or the paid version of our APIs. If you connect a third-party service to the Mistral AI Products, we do not use this third-party service to train our artificial intelligence models.— Excerpt from Mistral AI's Mistral AI Privacy Policy
(1) REGULATORY FRAMEWORK: This provision implicates GDPR Art. 6(1)(f) (legitimate interests) as the stated lawful basis, which requires a documented Legitimate Interest Assessment balancing Mistral AI's training interests against user privacy rights. GDPR Art. 13(2)(b) requires transparent disclosure of this processing at point of collection. The EU AI Act (Regulation 2024/1689) imposes transparency and data governance obligations on providers of general-purpose AI models trained on such data. French CNIL is primary enforcement authority; Article 56 GDPR one-stop-shop mechanism applies for cross-border EU enforcement. (2)
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The clause establishes a data utilization practice that differentiates service tiers: model training on user interactions occurs only for free-tier users who have not exercised an opt-out mechanism. This operational distinction creates separate data handling pathways based on subscription status and user election.
Your chat prompts and AI responses on the free tier are used to train Mistral AI's commercial language models, meaning personal information you share in conversations could influence future AI outputs unless you opt out via account settings.
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