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Microsoft Enters Fray, Backing Anthropic Against Pentagon's AI Blacklist

CNBC Technology March 10, 2026

Microsoft is directly challenging the Pentagon's decision to designate AI developer Anthropic as a 'supply chain risk,' a move that could effectively block Anthropic from lucrative U.S. government contracts. This intervention highlights the intense competition and strategic alliances forming around defense AI procurement and sets a significant precedent for how AI companies will be vetted by federal agencies.

Key Intelligence

  • **Microsoft is actively supporting Anthropic** in its dispute against a Pentagon 'supply chain risk' designation, signaling big tech's stake in securing government AI contracts.
  • The Pentagon's classification could **block Anthropic, a leading AI developer (makers of Claude), from critical U.S. government contracts**, including those for its advanced AI models.
  • **Microsoft's rare intervention**, seeking a temporary restraining order, underscores the fierce competition and strategic alliances forming around lucrative government AI procurement.
  • This legal battle sets a **precedent for how the U.S. government vets and contracts with AI developers**, especially concerning security and data provenance in AI supply chains.
  • It spotlights the **increasing scrutiny on AI supply chains**, from model development to deployment, impacting market access for many AI firms eyeing federal business.