AWS Bedrock now requires data from Anthropic’s Mythos‑class models to be retained for 30 days.
Anthropic says the retention lets it spot misuse patterns that a single request can’t reveal. Once a user opts in, the data leaves AWS’s own security boundary and is deleted after a month, unless retained for a safety investigation or legal need.
The change matters because customers must weigh the privacy trade‑off against any safeguards Anthropic promises. It also shifts responsibility for data protection from AWS to the downstream model provider.
In practice, the extra retention is a modest window, but it nudges enterprises to reassess how much of their proprietary or regulated data they feed into Bedrock’s Anthropic offerings.