Microsoft legal is evaluating Anthropic's Claude Fable over how it saves prompts and output

Anthropic released Claude Fable 5, the company's first publicly released Mythos-level AI model, and while it is state-of-the-art, Microsoft is reportedly running it through its legal department before authorizing its use in its products.

The news comes from The Verge's Tom Warren, who writes that he has heard from unnamed sources that Fable isn't available in the model picker for Microsoft employees using GitHub Copilot. Notably, every other Anthropic model is available in the model picker, as each complies with Microsoft's Zero Data Retention (ZDR) rules. However, Fable is different: the model's sophistication levels require data retention to operate, which violates Microsoft's internal policies.

Since Fable requires some data retention, Anthropic stores data such as prompts and the AI's responses. Anthropic deletes this data after 30 days, but some prompts and outputs can be stored by Anthropic for up to two years depending on how badly either has violated Anthropic's usage policies. So, to remedy this, Microsoft has handed over Fable to its legal department to evaluate the model, and see how it can use it safely.

Notably, Fable, being Anthropic's first Mythos-class AI model, comes after the company unveiled a larger, first-of-its-kind model that it deemed too dangerous to release to the public. Fable is a cut-down and regulated version of that larger model. The safeguards Anthropic implemented are for specific topics or areas. If you are interested in learning more about Fable, check out the link below for short videos from Anthropic that explain its capabilities and how it compares to competing models.