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OpenAI GPT OSS

An open-source family of large language models released by OpenAI, featuring two models: a 117B-parameter model (gpt-oss-120b) and a 21B-parameter model (gpt-oss-20b). Utilizing mixture-of-experts (MoE) with 4-bit quantization (MXFP4), these models offer powerful reasoning, chain-of-thought capabilities, and tool use support, optimized for fast inference on modern GPUs, ranging from data-center H100s to consumer hardware.

Key Information

  • Category: Language Models
  • Source: Huggingface
  • Last updated: February 24, 2026

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Canonical source: https://huggingface.co/blog/welcome-openai-gpt-oss

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