OpenAI Unveils Open-Weight AI Models Designed for Laptops
- tech360.tv
- Aug 6, 2025
- 2 min read
OpenAI has released two open-weight language models optimised for advanced reasoning and capable of running on laptops, the company announced Tuesday.
The models, gpt-oss-120b and gpt-oss-20b, are the first open models OpenAI has released since GPT-2 in 2019. The larger model can run on a single GPU, while the smaller version is designed to operate directly on personal computers.
Open-weight models allow developers access to trained parameters, enabling fine-tuning for specific tasks without needing the original training data. Unlike open-source models, they do not include full access to source code or training methodologies.
“One of the things that is unique about open models is that people can run them locally. People can run them behind their own firewall, on their own infrastructure,” said OpenAI co-founder Greg Brockman during a press briefing.
The models are designed to perform similarly to OpenAI’s proprietary o3-mini and o4-mini reasoning models. They are particularly strong in coding, competition mathematics and health-related queries.
OpenAI said the models were trained on a text-only dataset with a focus on science, mathematics and coding, in addition to general knowledge.
Amazon also announced that OpenAI’s open-weight models are now available on its Bedrock generative AI marketplace within Amazon Web Services. This marks the first time an OpenAI model has been offered on Bedrock.
Atul Deo, Bedrock’s director of product, said the models are strong open-weight options for customers, though he declined to comment on any contractual terms between AWS and OpenAI.
The release comes amid growing competition in the open-weight and open-source AI space. Meta’s Llama models previously led the field, but China’s DeepSeek recently gained attention with a powerful and cost-effective reasoning model.
OpenAI, backed by Microsoft and currently valued at USD 300 billion, is raising up to USD 40 billion in a new funding round led by Softbank Group.
OpenAI released two open-weight models optimised for laptops
Models perform similarly to proprietary o3-mini and o4-mini models
gpt-oss-20b can run directly on personal computers
Source: REUTERS
