Amazon said that AI startup OpenAI's new models will be available on Amazon Web Services (AWS) for the first time.

OpenAI's open weight models will be available via Amazon Bedrock and Amazon SageMaker AI for the first time, enabling customers to quickly and easily build generative artificial intelligence (AI) applications, it said in a statement.

Earlier this week, Sam Altman-led OpenAI launched two open-weight AI reasoning models with similar capabilities to its o-series.

The two models -- gpt-oss-120b and gpt-oss-20b --  are also freely available for download on Hugging Face and come natively quantized in MXFP4.

Amazon said that the models will put more powerful AI technologies into the hands of organizations and expand the impact of OpenAI’s technology by making it available to the millions of customers on AWS.

"The addition of OpenAI as our newest open weight model provider marks a natural progression in our commitment to bringing cutting-edge AI to organizations worldwide," said Atul Deo, director of product, AWS.

Earlier this year, Amazon also offered open model DeepSeek-R1 on AWS.