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OpenAI releases gpt-oss-safeguard, its open-weight reasoning models for safety classification tasks, available in 120B and 20B parameters, under Apache 2.0

New open safety reasoning models (120b and 20b) that support custom safety policies.  —  Today, we're releasing a research preview …

OpenAI

Discussion

  • @openai @openai on x
    Now in research preview: gpt-oss-safeguard Two open-weight reasoning models built for safety classification. https://openai.com/...
  • @openaidevs @openaidevs on x
    🧑‍💻 gpt-oss-safeguard Hackathon 🧑‍💻 Join us Dec. 8 in SF for the Open Safeguard Hackathon — a collaborative event by OpenAI, ROOST & @HuggingFace to explore how open models can shape safer digital spaces and explore the future of open-weight reasoning and online safety. Apply to
  • @openai @openai on x
    Our gpt-oss-safeguard models outperform gpt-5-thinking and the gpt-oss open models on multi-policy accuracy. [image]
  • @openai @openai on x
    gpt-oss-safeguard lets developers use their own custom policies to classify content. The model interprets those policies to classify messages, responses, and conversations. These models are fine-tuned versions of our gpt-oss open models, available under Apache 2.0 license. Now