Claude has stronger defaults than most. Anthropic does not train on consumer conversations unless you opt in or your content is flagged for safety review. Conversations are stored against your account until you delete them, and deleted chats are removed within 30 days.
Short answer
Claude has stronger defaults than most. Anthropic does not train on consumer conversations unless you opt in or your content is flagged for safety review. Conversations are stored against your account until you delete them, and deleted chats are removed within 30 days.
Of the mainstream assistants, Claude's default posture is the most conservative. That does not make it private in an absolute sense, and the details still matter.
Training
Anthropic's position on consumer products is that conversations are not used to train models by default. Opting in is available, and content flagged for trust and safety review can be examined and retained regardless. Commercial API traffic is excluded from training as standard.
Compare that with the consumer ChatGPT default, which is opted in unless you change it. It is a meaningful difference in defaults rather than a difference in what is technically possible.
Storage and deletion
| Item | Behaviour |
|---|---|
| Conversations | Stored against your account indefinitely |
| Deleted conversations | Removed from systems within 30 days |
| Projects and artifacts | Stored with the conversation, deleted with it |
Anthropic staff can access conversations for abuse investigation and legal compliance, the same as every provider. Automated classifiers run over traffic; humans see what those classifiers escalate. Nobody is reading your conversations for entertainment, but "nobody can ever see this" is not accurate anywhere.
Where Claude is genuinely better and worse
Better: the default training posture, clearer documentation, and a strong enterprise story with zero retention options on the API.
Worse for archiving: Claude's own export is slower to arrive than OpenAI's and lands as JSON that is, if anything, less approachable than conversations.json. Projects group conversations in the interface but that grouping is easy to lose when you take the data out.
Keeping your own copy
Open Settings, then Privacy, then Export Data. Anthropic emails a download link when the archive is ready, which can take longer than the equivalent OpenAI export. Inside is a JSON file containing every conversation.
ChatExports reads Claude's export format directly and converts it into per conversation PDF, Markdown, DOCX, or CSV files, in the browser, with no upload. If you work across Claude and ChatGPT, both archives convert through the same tool into the same folder structure, which makes a single searchable local archive of everything realistic.
Good defaults from a vendor are worth having. Your own copy is worth more, because it does not change when the terms of service do.
Frequently asked questions
Does Anthropic train on my Claude conversations?
Not by default on consumer plans. Opting in is possible, and flagged content can be reviewed and retained regardless of that setting.
How long does Anthropic keep deleted Claude chats?
Deleted conversations are removed from Anthropic's systems within 30 days, with the usual exceptions for legal and safety holds.
Is Claude safe for confidential work?
The commercial plans are designed for it and exclude training by default. Personal accounts should still not carry data covered by an NDA.
Can I export my Claude conversations?
Yes, from Settings, Privacy, Export Data. Anthropic emails a JSON archive, which needs converting before it is readable.