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gpt-oss-120b

OpenAI's 120B parameter open-weight language model released under Apache 2.0 in 2025. Supports MXFP4 and 8-bit quantization for multi-GPU deployment via vLLM. Competitive on reasoning and instruction-following benchmarks within the open-weight tier.

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From the model card

Fields below are copied from the tags and counters on the HuggingFace repository openai/gpt-oss-120b at our last fetch. They are set by the uploader, not verified by us; rows with no tag are omitted. How this page is made.

Publisher (HF namespace)
openai
Pipeline tag
text-generation
Library
Transformers, vLLM
Weight formats
safetensors
License tag
apache-2.0 — read the license file in the repo before relying on it
Papers cited
arXiv:2508.10925
Downloads (HF counter at last fetch)
5,174,914
Likes (HF counter at last fetch)
5,148
Model card
https://huggingface.co/openai/gpt-oss-120b

Use cases

  • Self-hosted chat assistants requiring large-model quality
  • Batch document processing on GPU clusters
  • Fine-tuning base for domain-specific applications
  • Research comparing open versus proprietary model behavior

Pros

  • Apache 2.0 license allows unrestricted commercial use
  • MXFP4 support reduces VRAM requirements at inference scale
  • vLLM compatible for high-throughput production serving

Cons

  • 120B scale requires 4–8 high-VRAM GPUs for full-precision inference
  • Text-only — no multimodal capability
  • Community fine-tunes and GGUF quants lag behind smaller popular models

Tags

transformerssafetensorsgpt_osstext-generationvllmconversationalarxiv:2508.10925license:apache-2.0eval-resultsendpoints_compatible8-bitmxfp4deploy:sagemakerdeploy:azureregion:us