OpenAI is releasing two lower-cost, open-weight reasoning models in an effort to be more competitive with Meta, Mistral and DeepSeek and they will be the first OpenAI models available from Amazon. The new offerings — gpt-oss-120b and gpt-oss-20b — will be among the model choices on AWS’s Bedrock and SageMaker AI services. Both models are said to be well-suited for agentic use. The gpt-oss-120b model performs comparably to OpenAI o4-mini on core reasoning and can run on a single 80GB GPU. The gpt-oss-20b model is compared to OpenAI o3‑mini and can run on edge devices with just 16GB of memory.

While these new OpenAI models are also downloadable via Hugging Face, AWS is offering them “similar to how Amazon offered open model DeepSeek-R1 earlier this year,” TechCrunch reports, calling this “a juicy competitive move for both companies.”

While it puts AWS “in the same sentence as the biggest model maker, OpenAI,” it also gets OpenAI into the catalog of the world’s largest cloud services provider, with nearly a 29 percent share, according to CloudZero.

“Until now, AWS has best been known as a major host and a financial backer of Anthropic’s Claude, one of OpenAI’s biggest competitors,” TechCrunch points out, noting that it also makes available “other models from makers such as Cohere, DeepSeek, Meta, and Mistral, as well as its own home-grown ones” via its two flagship AI marketplaces.

AWS Bedrock lets customers “build and host generative AI apps using models of their choice,” while SageMaker “allows AWS customers to train, or even build, their own AI models largely for analytics uses,” TechCrunch explains.

In SageMaker, the models will be available through a service called SageMaker JumpStart, which is designed to make it to easier and faster for customers to get started using machine learning.

In an introductory post, OpenAI says they “can carry out complex tasks like writing code” and also agentic tasks like “looking up information online on a user’s behalf,” according to Bloomberg.

Related:
OpenAI Releases Lower-Cost Models to Rival Meta, Mistral and DeepSeek, CNBC, 8/5/25
OpenAI Releases Open-Weight Reasoning Models Optimized for Running on Laptops, Reuters, 8/5/25
OpenAI Offers ChatGPT for $1 a Year to U.S. Government Workers, Bloomberg, 8/6/25
OpenAI Raises $8.3B as ChatGPT Nears 700M Weekly Users, ETCentric, 8/6/25