The whole hunk
from line 16, old and new numbered
/
lines
from line 16
1616* Only what is technically necessary for the feature to work is retained. Conversation content (your prompts and Claude's outputs) is not retained by default; the exception is [Covered Models](https://platform.claude.com/docs/en/manage-claude/api-and-data-retention#model-specific-data-retention-requirements), which require 30-day retention.
1717* Retained data is purged on the shortest practical time to live (TTL), and Anthropic aims to give customers control over how long data is retained. What is held, and the retention duration where a specific TTL applies, is documented on each feature's page.
1818
19Several retention models sit outside the ZDR and HIPAA arrangements described on this page. Data accessible through the [Compliance API](https://platform.claude.com/docs/en/manage-claude/compliance-api) follows its own retention model. The [Activity Feed](https://platform.claude.com/docs/en/manage-claude/compliance-activity-feed) retains data for 6 years. Chat, file, and project content from claude.ai follows your organization's retention policy set in [claude.ai > Organization settings > Data and privacy](https://claude.ai/admin-settings/data-privacy-controls). [Local session transcripts](https://platform.claude.com/docs/en/manage-claude/compliance-sessions#retrieve-local-sessions) (from sessions on users' machines, in apps such as Cowork and Claude Code) are stored for 6 years by default, or for your organization's custom conversation retention period when a finite one is set (the same claude.ai setting). [Remote session transcripts](https://platform.claude.com/docs/en/manage-claude/compliance-sessions#retrieve-remote-sessions) (Cowork in the cloud) are retained for 6 years. The Compliance API does not capture local sessions for which ZDR is in effect, or any local sessions from organizations with HIPAA readiness enabled.
19Several retention models sit outside the ZDR and HIPAA arrangements described on this page. Data accessible through the [Compliance API](https://platform.claude.com/docs/en/manage-claude/compliance-api) follows its own retention model. The [Activity Feed](https://platform.claude.com/docs/en/manage-claude/compliance-activity-feed) retains data for 6 years. Chat, file, and project content from claude.ai follows your organization's retention policy set in [claude.ai > Organization settings > Data and privacy](https://claude.ai/admin-settings/data-privacy-controls). [Local session transcripts](https://platform.claude.com/docs/en/manage-claude/compliance-sessions#retrieve-local-sessions) (from sessions on users' machines, in apps such as Cowork and Claude Code) are stored for 6 years by default, or for your organization's custom conversation retention period when a finite one is set (the same claude.ai setting). [Remote session transcripts](https://platform.claude.com/docs/en/manage-claude/compliance-sessions#retrieve-remote-sessions) (Cowork in the cloud) are retained for 6 years, unless a user deletes the session sooner. The Compliance API does not capture local sessions for which ZDR is in effect, or any local sessions from organizations with HIPAA readiness enabled.
2020
2121## Zero data retention (ZDR)
2222