NVIDIA-Nemotron-3.5-Lightning-30B-A3B-NVFP4 - GGUF

This repository contains GGUF format model files for WhiskyAKM/Nemotron-3.5-Lightning-30B-A3B-GGUF (quantized to NVFP4).

These files were converted using llama.cpp.

Available Files

Filename Quant Method Description
nemotron-3.5-lightning-30b-a3b-nvfp4.gguf NVFP4 Main model weights in NVIDIA FP4 format
nemotron-3.5-lightning-30b-a3b-dflash-nvfp4.gguf NVFP4 DFlash speculative decoding draft model

Model Summary

Total Parameters 30B (3B active)
Architecture MoE — Mamba-2 + MoE + Attention hybrid
Context Length Up to 1M tokens (256K native default)
Supported Languages English (and coding languages), Spanish, French, German, Italian, Japanese
Speculative Decoding DSpark, DFlash, MTP (Multi-Token Prediction)
Reasoning Mode Configurable on/off via chat template (enable_thinking=True/False)
Recommended Sampling Temperature 1.0, Top_P 0.95
License OpenMDW License Agreement, version 1.1
Original Model WhiskyAKM/Nemotron-3.5-Lightning-30B-A3B-GGUF

Model Overview

Model Developer: NVIDIA Corporation

Model Dates: December 2025 - May 2026

Data Freshness:

  • The pre-training data has a cutoff date of September 2025.
  • The post-training data has a cutoff date of May 2026.

What is Nemotron?

NVIDIA Nemotron™ is a family of open models with open weights, training data, and recipes, delivering leading efficiency and accuracy for building specialized AI agents.

Description

NVIDIA-Nemotron-3.5-Lightning-30B-A3B-NVFP4 is a large language model (LLM) trained and quantized by NVIDIA.

The model employs a hybrid Mixture-of-Experts architecture, utilizing interleaved Mamba-2 and MoE layers, along with select Attention layers. The Lightning 3.5 model is released alongside speculative decoding methods (DSpark, DFlash, MTP) for faster text generation. The model has 3B active parameters and 30B parameters in total.

This model is ready for commercial use under the OpenMDW-1.1 license.

Usage with llama.cpp

CLI / llama-cli

Reasoning ON (default):

llama-cli \
  -m nemotron-3.5-lightning-30b-a3b-nvfp4.gguf \
  --jinja \
  --chat-template-file chat_template.jinja \
  -p "Write a Python function to compute Fibonacci numbers." \
  --temp 1.0 --top-p 0.95 \
  -ngl 99

llama-server

Start the OpenAI-compatible server:

llama-server \
  -m nemotron-3.5-lightning-30b-a3b-nvfp4.gguf \
  --temp 1.0 --top-p 0.95 \
  -np 1 \
  -c 40960 \
  --port 8000 \
  -ngl 99 \
  -fa on \
  --jinja \
  --chat-template-file chat_template.jinja \
  --no-webui \
  --fit off

With DFlash Speculative Decoding

Accelerate token generation using the DFlash draft model:

llama-server \
  -m nemotron-3.5-lightning-30b-a3b-nvfp4.gguf \
  -md nemotron-3.5-lightning-30b-a3b-dflash-nvfp4.gguf \
  --draft-max 6 \
  --temp 1.0 --top-p 0.95 \
  -np 1 \
  -c 40960 \
  --port 8000 \
  -ngl 99 \
  -ngld 99 \
  -fa on \
  --jinja \
  --chat-template-file chat_template.jinja \
  --no-webui \
  --fit off

API Client Example (OpenAI SDK)

from openai import OpenAI

client = OpenAI(base_url="http://localhost:8000/v1", api_key="EMPTY")

# Reasoning ON (default)
response = client.chat.completions.create(
    model="nemotron-3.5-lightning-30b-a3b",
    messages=[{"role": "user", "content": "Write a haiku about GPUs"}],
    max_tokens=4096,
    temperature=1.0,
    top_p=0.95,
    extra_body={"chat_template_kwargs": {"enable_thinking": True}},
)
print(response.choices[0].message.content)

# Reasoning OFF (direct answer)
response = client.chat.completions.create(
    model="nemotron-3.5-lightning-30b-a3b",
    messages=[{"role": "user", "content": "What is the capital of Japan?"}],
    max_tokens=128,
    temperature=1.0,
    top_p=0.95,
    extra_body={"chat_template_kwargs": {"enable_thinking": False}},
)
print(response.choices[0].message.content)

Benchmarks

Reasoning Benchmark Evaluations

Task Nemotron-3.5-Lightning-30B-A3B-BF16 Nemotron-3.5-Lightning-30B-A3B-NVFP4
General Knowledge
MMLU Pro 81.94 81.62
AA-Omniscience 17.50 16.63
Reasoning
GPQA Diamond (no tools) 75.44 75.57
HLE (text-only, no tools) 11.72 10.47
SciCode 32.60 31.38
Coding & Agentic
SWE-bench Verified 51.56 52.80
SWE-bench Multilingual 39.33 36.47
Terminal-Bench 2.1 24.58 23.46
PinchBench 85.37 83.43
BrowseComp 36.97 36.81
τ³-bench (Banking) 9.28 9.48
GDPval-AA-V2 832 865
Instruction Following
IFBench (loose) 71.88 72.88
Long Context
AA-LCR 52.00 49.19

License and Terms of Use

Governing Download Terms: Use of this model is governed by the OpenMDW-1.1 model license.

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