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OpenAI Just Teased a New 'Open-Weights' AI Model: Here's What That Means

Published on: 2025-05-21 13:45:00

OpenAI, the company behind the popular chatbot, ChatGPT, is building a new AI model. The model will be an "open-weights" language model with reasoning, according to CEO Sam Altman who tweeted about the development on Monday. An "open-weights" AI model is a kind of middle ground between open- and closed-source approaches. Weights are how AI models learn and make connections -- certain characteristics or connections are given more weight in an effort to reinforce specific information. An open-weights model means that its weights are publicly available, as the Federal Trade Commission puts it. That means that users would be able to see these weights and change them without retraining the model on new data. Open-weights models are usually cheaper for companies to use and allows them to customize the models. For example, a business could upload its internal documents to an existing open-weights model to incorporate that information in its results without having to build the whole thing fr ... Read full article.