This is a juicy competitive move for both companies after AWS faced an onslaught of criticism over its progress with AI.

New OpenAI gpt-oss models aim for low-resource performance and enterprise use, though their real-world capabilities remain unverified outside company-controlled benchmarks and documents.

These models are now accessible via AWS Bedrock and SageMaker, putting Amazon in direct play with Microsoft and giving AWS customers a new way to build and run AI applications using OpenAI technology.