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OpenAI launches reasoning LLM that you can download and tweak

One version of the gpt-oss large language model can run on a laptop, and performs nearly as well as the company’s most powerful models.
By
  1. Elizabeth Gibney

OpenAI has launched a large language model (LLM) that lives up to the company’s name. Known as gpt-oss, it is the first ‘reasoning’ artificial intelligence (AI) from the firm that is open-weight, meaning that researchers will be able to download it and customize it.

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Nature 644, 588-589 (2025)

doi: https://doi.org/10.1038/d41586-025-02495-w

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