Change log

SiteMeta AI added, and four rows updated from live re-reads: Perplexity rewritten to its 23 Oct 2026 notice, DeepSeek updated to its 10 Feb 2026 policy, Grok training details added from its Consumer FAQs, Mistral Le Chat renamed Mistral Vibe. ChatGPT re-read labels cleared.

SiteFirst full read of eight products: ChatGPT, Claude, Copilot, DeepSeek, Gemini, Grok, Mistral Le Chat and Perplexity. Meta AI is not yet listed.

Vendor pageGoogle’s Gemini Apps Privacy Hub shows an update date of 23 Oct 2026. Google

Vendor pagePerplexity’s privacy notice shows a last-updated date of 23 Oct 2026. Perplexity

Vendor pagexAI’s privacy policy shows a last-updated date of 11 Oct 2026. The previous version is dated 24 Aug 2026. xAI

Vendor pageMistral AI’s privacy policy shows an effective date of 3 Sep 2026. Mistral AI

ProductMicrosoft’s documentation separates the new Copilot app (from 18 Aug 2026) from the older app. We list both. Microsoft

Vendor pageAnthropic’s page on how long it stores data shows an update date of 1 Jul 2026. Anthropic

Vendor pageDeepSeek’s privacy policy shows a last update of 10 Feb 2026. DeepSeek

Court (secondary source)A federal judge upheld an order for OpenAI to produce about 20 million de-identified ChatGPT logs in the New York Times copyright case. ABA Journal

Vendor statementOpenAI said it is no longer under an order to keep consumer ChatGPT and API content indefinitely and has returned to 30-day deletion. Limited April to September 2025 data stays under legal hold. Data from the EEA, Switzerland and the UK is excluded. OpenAI

Vendor statementOpenAI’s duty to preserve new output log data ended. OpenAI

Court (secondary source)A US magistrate judge ordered OpenAI to preserve and segregate output log data that would otherwise be deleted, in the New York Times lawsuit. Thurrott, quoting the ruling