Show HN: Is this AI training on my prompts? A dated record of the fine print

A new Show HN project, "Is this AI training on my prompts?", publishes a dated record of what each AI tool's own terms of service say about whether user prompts are used for model training, drawing on over a thousand recorded versions of those documents that reduce to a few dozen real changes. The table shows ChatGPT Free, Plus and Pro trains on prompts by default with an opt-out, while ChatGPT Business, Enterprise, Edu and API does not train unless customers opt in; Claude.ai Free, Pro and Max trains by default with an opt-out, while Anthropic's commercial Team, Enterprise and API tiers do not train on customer content. Microsoft Copilot trains on conversation data in certain unnamed markets with an opt-out, GitHub Copilot trains on private repository inputs by default unless users opt out under Section J.3 of GitHub's Terms of Service, and Perplexity's API and enterprise data processing agreement state customer content is not used for training.

Is this AI training on my prompts? What each tool's own terms say about your prompts, in their words, with the date. Below the table, every time a company actually changed those words. Over a thousand recorded versions of these documents come down to a few dozen real changes. | Tool and plan | Trains on my prompts? | In their words | On record since | |---|---|---|---| | ChatGPT https://trainedon.me/vendors/chatgpt Free, Plus and Pro | Yes, by default. You can opt out. Data Controls in settings, or "do not train on my content" in OpenAI's privacy portal. Temporary Chats are not used for training. | When you use our services for individuals such as ChatGPT, Sora, or Operator, we may use your content to train our models. Privacy Policy https://openai.com/policies/eu-privacy-policy/ | previous capture last seen | | ChatGPT https://trainedon.me/vendors/chatgpt Business, Enterprise, Edu and API | No, unless you opt in. Opt-in only, for example through feedback mechanisms. | By default, we do not use your business data for training our models. Business Privacy Policy https://openai.com/enterprise-privacy/ | first capture, may be older last seen | | Claude.ai https://trainedon.me/vendors/claude-ai Free, Pro and Max | Yes, by default. You can opt out. Account settings. Conversations flagged for safety review and material you report as feedback are used even after opting out. | We may use your Inputs and Outputs to train and improve Anthropic AI models, unless you opt out through your account settings. Privacy Policy https://www.anthropic.com/legal/privacy | last seen | | Claude.ai https://trainedon.me/vendors/claude-ai Commercial Team, Enterprise, API | No. | Anthropic may not train models on Customer Content from Services. Commercial Terms https://www.anthropic.com/legal/commercial-terms | first capture, may be older last seen | | Microsoft Copilot https://trainedon.me/vendors/microsoft-copilot Consumer Copilot | Yes, in certain markets. You can opt out. Copilot settings. Which markets is not stated. | In certain markets, we use conversation data to train the generative AI models in Copilot, unless you choose to opt-out of such training. Privacy Policy https://privacy.microsoft.com/en-ie/privacystatement · last good capture | previous capture last seen | | GitHub Copilot https://trainedon.me/vendors/github-copilot Accounts under GitHub's Terms of Service | Yes, by default. You can opt out. Section J.3 of GitHub's Terms. Unless you opt out, GitHub's affiliates may also use your Inputs and Outputs. | If you provide your private repository content as Input to AI Features, we may use that Input to provide, develop, train, and improve the Service, including AI Features. Terms of Service https://docs.github.com/en/site-policy/github-terms/github-terms-of-service | previous capture last seen | | Perplexity https://trainedon.me/vendors/perplexity API | No. | Perplexity shall not use or authorize third parties to use Customer Content to train, retrain, fine-tune or otherwise improve any generative artificial intelligence models. Developer Terms https://www.perplexity.ai/hub/legal/perplexity-api-terms-of-service | first capture, may be older last seen | | Perplexity https://trainedon.me/vendors/perplexity Enterprise data processing agreement | No. | For the avoidance of doubt, Personal Data will not be used for training of Perplexity's large language models. Data Processor Agreement https://www.perplexity.ai/hub/legal/dpa | first capture, may be older last seen | | Grok https://trainedon.me/vendors/grok Consumer grok.com, X and apps | You choose in settings. The terms do not say which way it starts. A setting when logged in; the terms do not say which way it starts, but the apps ask you to choose at setup. Logged-out use grants xAI "full rights" to use your data for model training. | When logged into our Service, you can select whether or not you want us to use your User Content to improve our products and services and train our models. Terms of Service https://x.ai/legal/terms-of-service | previous capture last seen | | Grok https://trainedon.me/vendors/grok xAI API and enterprise | No. De-identified data derived from your use may still be used "for any lawful purpose". | For clarity, xAI shall not use any User Content to train any foundation models, large language models, or other artificial intelligence systems. Commercial Terms https://x.ai/legal/terms-of-service-enterprise | previous capture last seen | | Cursor https://trainedon.me/vendors/cursor All plans | No, unless you opt in. Training needs your explicit agreement. Preferences are managed in the app. | ANYSPHERE WILL NOT USE CONTENT TO TRAIN, OR ALLOW ANY THIRD PARTY TO TRAIN, ANY AI MODELS, UNLESS YOU'VE EXPLICITLY AGREED TO THE USE OF CONTENT FOR TRAINING. Terms of Service https://www.cursor.com/terms-of-service | previous capture last seen | | Windsurf Codeium https://trainedon.me/vendors/windsurf Free | Yes. No opt-out stated. None on the free tier. The opt-out is for paid tiers only. | Cognition may use Customer Data for model training purposes and to improve and enhance the Services. Terms of Service https://codeium.com/terms-of-service-individual | previous capture last seen | | Windsurf Codeium https://trainedon.me/vendors/windsurf Paid Pro, Teams | Yes, by default. You can opt out. On Teams, only an administrator may opt out. | If you subscribe to a paid Service Tier, you may opt out of this use "Opt-Out" . Terms of Service https://codeium.com/terms-of-service-individual | previous capture last seen | | DeepSeek https://trainedon.me/vendors/deepseek Consumer app and platform | Yes, by default. You can opt out. Listed among privacy rights: "the right to opt-out of using your Personal Data for training our models or optimizing our technologies." | To improve and develop the Services and to train and improve our technology, such as our machine learning models and algorithms. Privacy Policy https://cdn.deepseek.com/policies/en-US/deepseek-privacy-policy.html | last seen | | Jasper https://trainedon.me/vendors/jasper All plans | Yes. Opt-out only in some regions. EU and UK users only, by request to \ email protected\ https://trainedon.me/cdn-cgi/l/email-protection . The licence covers "modifying, improving, and enhancing artificial intelligence models". | For users located in the European Union or United Kingdom, you may have the right to object to the use of your Customer Property for the purpose of improving artificial intelligence models. Terms of Service https://www.jasper.ai/legal/terms | previous capture last seen | | Le Chat https://trainedon.me/vendors/le-chat Free, Pro and Student | Yes, by default. You can opt out. Account settings. Feedback and moderated content are used regardless. | We do not use Your Data to train our artificial intelligence models except a when you use the Mistral AI Products under a free subscription, Le Chat Pro or Le Chat Student and you have not opted-out of training Terms of Service https://mistral.ai/terms/ | first capture, may be older last seen | | Le Chat https://trainedon.me/vendors/le-chat Team and Enterprise | No, unless you opt in. Exceptions are feedback you give and content flagged by moderation. | We do not use Your Data to train our artificial intelligence models except Terms of Service https://mistral.ai/terms/ | first capture, may be older last seen | Latest changes - Cognition now says it "may use Customer Data for model training purposes"; "paid Service Tier" customers "may opt out" Teams administrator only . https://trainedon.me/changes/2026-07-01-windsurf-terms-of-service Change of position · Windsurf Codeium , Terms of Service - "Train our models" became "train and improve Anthropic AI models", and research on the societal impacts of AI became a stated purpose. https://trainedon.me/changes/2026-06-08-claude-ai-privacy-policy Scope change · Claude.ai, Privacy Policy - xAI's enterprise terms dropped automatic 30-day deletion of User Content and claimed ownership of de-identified data for any lawful purpose. https://trainedon.me/changes/2026-05-18-grok-commercial-terms Change of position · Grok, Commercial Terms - Grok added a provision stating that it "shall not use any Google Apps content" connected via Google OAuth for "any of its internal AI or other training purposes." https://trainedon.me/changes/2026-05-18-grok-privacy-policy Scope change · Grok, Privacy Policy - OpenAI now says, "if training is enabled" or "if you provide feedback," it uses content, and also uses "data from third-party partners" to train models. https://trainedon.me/changes/2026-05-18-chatgpt-privacy-policy New disclosure · ChatGPT, Privacy Policy - GitHub now says it may train on “Your Content” and Affiliates may use Inputs/Outputs “Unless you opt out,” replacing “if you allow in your settings.” https://trainedon.me/changes/2026-04-27-github-copilot-terms-of-service Change of position · GitHub Copilot, Terms of Service