| Grok (xAI / SpaceXAI) | API/Enterprise: inputs and outputs automatically deleted within 30 days unless agreed in writing or flagged for ToS/AUP review. Consumer: not stated on checked page | API/Enterprise: no training on business data (exception: free-credit programs that opt in). Consumer: not stated | Not stated | Custom retention only by written agreement |
| ChatGPT / OpenAI API | Saved chats kept until the user deletes them or a workspace policy removes them; deleted chats purged within 30 days. Temporary chats up to 30 days. API abuse-monitoring logs up to 30 days by default | API: off by default since 1 Mar 2023 (opt-in only). Consumer/Enterprise: not stated on checked pages | Enterprise: Compliance API (Library files exposed through Compliance API endpoints); also covered by Microsoft Purview connectors | Enterprise/Edu/Healthcare workspace retention policies; API Private/Safety Retention options for BAA customers |
| Microsoft 365 Copilot | Copilot interactions stored in a hidden mailbox folder and governed by Purview retention policies (default: kept until a policy deletes them) | Not stated on checked page | Yes: searchable with Purview eDiscovery; Purview also covers third-party AI apps (ChatGPT Enterprise, Gemini, DeepSeek, etc.) | Purview retention policies for Copilot & AI app locations (retain and/or delete) |
| Claude (Anthropic) | Consumer: deleted chats purged from back end within 30 days. If model-training is on, de-identified data kept up to 5 years. Flagged chats: inputs/outputs up to 2 years, safety scores up to 7 years. Feedback: 5 years | Consumer: a user setting (model improvement); default not stated on checked page. Commercial: see the org-data article (not reviewed in detail) | Not stated | Commercial controls: not stated on checked page |
| Gemini (consumer + Workspace) | Consumer: activity auto-deletes at 18 months by default (can be 3 or 36 months, or never). Keep Activity off or temporary chats: 72 hours. Human-reviewed chats kept up to 3 years, even after you delete them. Workspace: prompts/responses kept 90 days to indefinite, set by admins | Consumer: yes while Keep Activity is on (the default). Workspace: no training outside your domain without permission | Workspace: Google Vault manages retention | Workspace: auto-delete 3/18/36 months or indefinite; Vault |
| OpenText Aviator | Not stated | Not stated | Not stated | Not stated |
| GitHub Copilot | Not stated on checked page | Not stated on checked page | Not stated | Not stated on checked page |
| Perplexity | Not stated | Not stated | Not stated | Not stated |
| Slack AI | Summaries/search answers are ephemeral; stored recaps are deleted when their source messages are deleted by retention or compliance policy. LLMs keep nothing after inference | Never used to train LLMs | Follows Slack's existing retention/compliance policies (detail not stated on page) | Inherits workspace retention settings |
| Zoom AI Companion | Not stated (page is a JavaScript app we couldn't parse) | Not stated | Not stated | Not stated |