AWS Bedrock to require sharing data with Anthropic for Mythos and future models

For Fable 5, Mythos 5, and future models on Bedrock with similar or higher capability levels, Anthropic will require 30-day retention for all traffic on Mythos-class models. Retaining data for a limited period allows Anthropic to detect patterns of misuse that are not visible from a single exchange. Once you opt into data retention, your data will leave AWS’s data and security boundary.

From the announcement here: https://aws.amazon.com/blogs/aws/anthropic-claude-fable-5-on...

After 30 days, the data is deleted automatically, except in the rare cases where it's part of a safety investigation or we're legally required to keep it.

From: https://support.claude.com/en/articles/15425996-data-retenti...