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yesterday

Microsoft Weighs Lawsuit Over OpenAI’s $50 Billion AWS ‘Frontier’ Deal

The dispute centers on a clause that Microsoft says requires all access to OpenAI models to run on Azure.

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Overview

  • Financial Times reporting says Microsoft is considering legal action against OpenAI and Amazon over Frontier being hosted on AWS in a deal reported at about $50 billion.
  • Microsoft relinquished exclusive cloud-provider status in a 2025 renegotiation but says an API‑routing clause still requires all calls to OpenAI models to flow through Azure.
  • No lawsuit has been filed, with talks continuing as a source cited by the FT suggested Microsoft may hesitate to sue given ongoing US, UK, and EU scrutiny of its cloud licensing.
  • OpenAI’s unreleased Frontier is described as using a Stateful Runtime Environment on Amazon Bedrock, while a person familiar with OpenAI’s position told the FT the arrangement does not provide backdoor access to its stateless models.
  • An internal Amazon memo reportedly instructed staff to say the SRE is “powered by” or “integrates with” OpenAI rather than language implying direct model access, and separate reporting notes Microsoft has reorganized Copilot teams under competitive pressure.