OpenAI Partners with Amazon's Cloud as Microsoft Exclusivity Ends

• AWS customers will access OpenAI's models and Codex agent through Amazon Bedrock, with general availability expected in the coming weeks
• OpenAI's revenue chief previously told employees that the Microsoft exclusivity 'has also limited our ability to meet enterprises where they are — for many that's Bedrock'
• The announcement follows Amazon's $50 billion investment in OpenAI in early 2026 and a commitment by OpenAI to use two gigawatts worth of AWS custom Trainium chips for AI model training

Summary: OpenAI Partners with Amazon's Cloud as Microsoft Exclusivity Ends

Key Development:

OpenAI's generative AI models are now available on Amazon Web Services (AWS), announced just one day after the company restructured its exclusive partnership with Microsoft to allow multi-cloud deployment.

Main Players & Products:

• OpenAI: Making its AI models and Codex coding agent available through Amazon Bedrock
• Amazon Web Services (AWS): CEO Matt Garman stated this partnership fulfills long-standing customer demand
• Microsoft: Previously OpenAI's exclusive cloud provider since before ChatGPT's 2022 launch

Financial Details:

• Amazon invested $50 billion in OpenAI (announced three months prior)
• OpenAI committed to using two gigawatts of AWS custom Trainium chips for AI model training
• Reports indicate OpenAI recently missed internal revenue and user targets

Strategic Implications:

The restructured Microsoft relationship allows OpenAI to "cap revenue" sharing and operate across multiple cloud platforms. OpenAI's revenue chief Denise Dresser previously noted that Microsoft exclusivity "limited our ability to meet enterprises where they are—for many that's Bedrock."

Service Offerings:

• OpenAI models accessible via Amazon Bedrock (generally available within weeks)
• New Amazon Bedrock Managed Agents powered by OpenAI, featuring memory capabilities
• Previously, only "open-weight" models were available on AWS (since August)

Market Context:

The announcement reflects OpenAI's strategy to diversify cloud infrastructure partnerships and expand enterprise accessibility. The timing coincides with CEO Sam Altman's ongoing legal case against Elon Musk in Oakland.