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yesterday

OpenAI Reenters Open-Weight AI Market with gpt-oss-120b and gpt-oss-20b

OpenAI’s first open-weight release since GPT-2 features two reasoning models licensed under Apache 2.0; they pair chain-of-thought processing with tool use on local hardware following months of safety testing.

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Overview

  • OpenAI published the weights for gpt-oss-120b and gpt-oss-20b under Apache 2.0 on Hugging Face and leading cloud platforms.
  • Both text-only models excel at advanced reasoning and tool integration, such as web search and Python code execution, but they do not support images or audio.
  • The 117 billion-parameter gpt-oss-120b runs on a single Nvidia GPU while the 21 billion-parameter gpt-oss-20b operates on consumer laptops with at least 16 GB of memory.
  • Apache 2.0 licensing grants enterprises wide commercial use and modification rights while OpenAI withholds the training data amid ongoing copyright and legal sensitivities.
  • Extensive safety tests with internal and third-party evaluators found no high-capability misuse threshold breaches; release signals a strategic bid to counter rival open-model offerings from Chinese labs, following U.S. government calls for AI transparency.