Amazon Web Services (AWS) announced on August 5 that OpenAI’s new open weight foundation models—gpt-oss-120b and gpt-oss-20b are now available on Amazon Bedrock and Amazon SageMaker AI, marking a significant expansion in generative AI offerings on its cloud platform.
First-Time Integration with AWS
This is the first time OpenAI’s open weight models are being made accessible through AWS, offering customers a streamlined path to build and deploy generative AI applications using familiar AWS tools and infrastructure.
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The larger model, gpt-oss-120b, delivers 3x better price-performance than Google’s Gemini, 5x better than DeepSeek-R1, and 2x better than OpenAI’s own o4 model, according to Amazon.
Ideal for Complex Workflows
With advanced reasoning abilities, these models are particularly suited for agentic workflows, programming, scientific analysis, and multi-step problem-solving. They are equipped with features such as chain-of-thought outputs, web search, and code interpretation, alongside a 128K token context window to process large documents.
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OpenAI models come integrated with Amazon Bedrock’s Guardrails, preventing up to 88% of toxic content with configurable filters. The models also passed thorough safety evaluation to enable responsible deployment.
Enhanced Capabilities on SageMaker
On Amazon SageMaker AI, customers are able to use OpenAI models for pre-training, evaluation, fine-tuning, and custom deployment, using AWS’s strong set of machine learning tools.
Amazon announced that companies like Pfizer, Siemens, the PGA TOUR, and GoDaddy already leverage Amazon Bedrock for GenAI-driven transformations. OpenAI now joins Meta, Mistral AI, and others as part of AWS’s expanding ecosystem of open weight model providers, it announced.
