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Microsoft limits employee use of Anthropic's Claude Fable 5 over data retention concerns, The Verge reports
ZivFin Analysis2026.06.10
Microsoft is limiting employees' use of Anthropic's Claude Fable 5 because of the AI startup's new data retention requirements, The Verge reported on Wednesday, citing sources. Anthropic on Tuesday said it is rolling out Claude Fable 5, a public version of its Mythos AI model, with guardrails barring its use in risky areas such as cybersecurity. Claude Fable 5 is the most powerful model Anthropic has made available for wider use, with the company citing its performance in software engineering and analytics.
