Microsoft backs AI firm Anthropic in legal battle against Pentagon

Tech company files amicus brief in support of Anthropic's effort to overturn an aggressive Pentagon designation

Microsoft has thrown its weight behind Anthropic's legal challenge against the Pentagon, filing a court brief in support of the AI company's effort to overturn an aggressive designation that effectively bars it from government work.

In an amicus brief submitted to a federal court in San Francisco this week, Microsoft, which integrates Anthropic's AI tools into systems it provides to the US military, argued that a temporary restraining order was necessary to prevent serious disruption to suppliers whose products rely on the AI company's technology. Google, Amazon, Apple and OpenAI have also signed on to a brief in support of Anthropic.