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Install Unsloth Studio (macOS, Linux, WSL)
curl -fsSL https://unsloth.ai/install.sh | sh
# Run unsloth studio
unsloth studio -H 0.0.0.0 -p 8888
# Then open http://localhost:8888 in your browser
# Search for mudler/NVIDIA-Nemotron-3-Super-120B-A12B-APEX-GGUF to start chatting
Install Unsloth Studio (Windows)
irm https://unsloth.ai/install.ps1 | iex
# Run unsloth studio
unsloth studio -H 0.0.0.0 -p 8888
# Then open http://localhost:8888 in your browser
# Search for mudler/NVIDIA-Nemotron-3-Super-120B-A12B-APEX-GGUF to start chatting
Using HuggingFace Spaces for Unsloth
# No setup required
# Open https://huggingface.co/spaces/unsloth/studio in your browser
# Search for mudler/NVIDIA-Nemotron-3-Super-120B-A12B-APEX-GGUF to start chatting
Quick Links

⚡ Each donation = another big MoE quantized

I host 25+ free APEX MoE quantizations as independent research. My only local hardware is an NVIDIA DGX Spark (122 GB unified memory) — enough for ~30-50B-class MoEs, but bigger ones (200B+) require rented compute on H100/H200/Blackwell, typically $20-100 per quant.
If APEX quants are useful to you, your support directly funds those bigger runs.

🎉 Patreon (Monthly)  |  ☕ Buy Me a Coffee  |  ⭐ GitHub Sponsors

💚 Big thanks to Hugging Face for generously donating additional storage — much appreciated.

Nemotron-3-Super-120B-A12B APEX GGUF

APEX (Adaptive Precision for EXpert Models) quantizations of NVIDIA-Nemotron-3-Super-120B-A12B.

Brought to you by the LocalAI team | APEX Project | Technical Report

Benchmark Results

Benchmarks coming soon. For reference APEX benchmarks on the Qwen3.5-35B-A3B architecture, see mudler/Qwen3.5-35B-A3B-APEX-GGUF.

What is APEX?

APEX is a quantization strategy for Mixture-of-Experts (MoE) models. It classifies tensors by role (routed expert, shared expert, attention) and applies a layer-wise precision gradient -- edge layers get higher precision, middle layers get more aggressive compression. I-variants use diverse imatrix calibration (chat, code, reasoning, tool-calling, agentic traces, Wikipedia).

See the APEX project for full details, technical report, and scripts.

Architecture

  • Model: NVIDIA-Nemotron-3-Super-120B-A12B (NemotronH)
  • Layers: 88
  • Type: Hybrid Mamba-2 / LatentMoE / Attention + Multi-Token Prediction (MTP)
  • Experts: 512 routed + 1 shared (22 active per token)
  • Total Parameters: 120B
  • Active Parameters: ~12B per token
  • APEX Config: 5+5 symmetric edge gradient across 88 layers

Run with LocalAI

local-ai run mudler/NVIDIA-Nemotron-3-Super-120B-A12B-APEX-GGUF@Nemotron-3-Super-120B-A12B-APEX-I-Balanced.gguf

Credits

APEX is brought to you by the LocalAI team. Developed through human-driven, AI-assisted research. Built on llama.cpp.

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