WorkThe story, in brief
Claude Fable 5 on Bedrock Requires Sharing Inference Data with Anthropic
Claude on AWS now sends your prompts to Anthropic. Here's what changed.
The KeyNews take
Why it matters
A major shift in data handling for enterprise AI: Bedrock users must now accept inference data sharing with Anthropic for model improvement, breaking the previous AWS data isolation promise. This raises governance and compliance questions for regulated industries.
The key facts
5 to knowClaude Fable 5 and Mythos 5 on Bedrock require opt-in to provider_data_share
Prompts and outputs sent to Anthropic with 30-day retention and human review
Previous Bedrock models kept inference data within AWS boundary
Anthropic requested AWS revoke access to both models 3 days post-launch citing US export control compliance
Data sharing policy represents departure from prior data isolation model
Go to the source
InfoQ AI/MLinfoq.com
Publisher excerpt: Using Claude Fable 5 or Mythos 5 on Amazon Bedrock requires opting into provider_data_share, sending prompts and outputs to Anthropic for 30-day retention with human review. Previous Bedrock models kept inference data inside the AWS boundary. Three days after launch, Anthropic asked AWS to revoke…