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AI data retention in 2026: ChatGPT, Claude, and Gemini

calendar_today September 8, 2026 person WitnessAI domain witness-ai

AI data retention windows now run from zero to five years. The window that applies depends on the vendor, the product tier, the endpoint, and whether the user opted in. ChatGPT, Claude, and Gemini all rewrote their rules between 2025 and 2026, and Anthropic did it twice.

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