gpt-oss-120b on AMD/Nvidia GPU Complete Walkthrough Windows

To install this model locally in the shortest time, opt for a direct curl execution.

Carefully read and apply the steps described below.

1-click setup: the app automatically fetches the large weight files.

To save you time, the system will automatically determine efficient resource allocation.

📦 Hash-sum → 885eb505d74be820769b9d49e9bd8bf9 | 📌 Updated on 2026-06-23



  • Processor: 4.0 GHz+ boost clock recommended for CPU inference
  • RAM: at least 32 GB in dual-channel mode for bandwidth
  • Disk: high-speed SSD 120 GB to cache model layers
  • Graphics: 12 GB VRAM minimum required for basic quantization

The gpt-oss-120b is an open‑source large language model featuring 120 billion parameters, built to enable transparent research and commercial deployment. It employs a mixture‑of‑experts architecture that balances inference efficiency with high contextual coherence across diverse tasks. The model supports multiple languages and incorporates built‑in safety alignments to reduce hallucinations and improve reliability. Benchmarks show it outperforms many 70‑billion‑parameter systems on reasoning tasks while consuming less computational power than comparable 175‑billion‑parameter models. A dedicated community hub provides pre‑trained checkpoints, fine‑tuning scripts, and comprehensive documentation for developers and researchers.

Parameters 120 billion
Training Data Web‑scale corpora in multiple languages
Inference Latency ≈120 ms per 512‑token sequence on GPU
Model Size ≈180 GB (float16)

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