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WhiskyAKM/Nemotron-3.5-Lightning-30B-A3B-GGUF

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Model Card

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

This repository contains GGUF format model files for NVIDIA's NVIDIA-Nemotron-3.5-Lightning-30B-A3B.

These files were converted and quantized using llama.cpp.

Available Files

FilenameQuant MethodDescription
nemotron-3.5-lightning-30b-a3b-bf16.ggufBF16Full-precision reference weights (unquantized)
nemotron-3.5-lightning-30b-a3b-Q8_0.ggufQ8_0Extremely high quality, fast, high resource usage
nemotron-3.5-lightning-30b-a3b-Q6_K.ggufQ6_KVery high quality, near-lossless quantization
nemotron-3.5-lightning-30b-a3b-Q5_K_M.ggufQ5KMHigh quality, balanced performance and memory
nemotron-3.5-lightning-30b-a3b-Q5_K_S.ggufQ5KSHigh quality, slightly smaller footprint than Q5KM
nemotron-3.5-lightning-30b-a3b-Q4_K_M.ggufQ4KMRecommended balance of size, speed, and quality
nemotron-3.5-lightning-30b-a3b-Q4_K_S.ggufQ4KS4-bit quantization with small memory footprint
nemotron-3.5-lightning-30b-a3b-Q4_0.ggufQ4_0Standard 4-bit quantization
nemotron-3.5-lightning-30b-a3b-dflash.gguf—DFlash speculative decoding draft model

Model Summary

Total Parameters30B (3B active)
ArchitectureMoE — Mamba-2 + MoE + Attention hybrid
Context LengthUp to 1M tokens (256K native default)
Supported LanguagesEnglish (and coding languages), Spanish, French, German, Italian, Japanese
Speculative DecodingDSpark, DFlash, MTP (Multi-Token Prediction)
Reasoning ModeConfigurable on/off via chat template (enable_thinking=True/False)
Recommended SamplingTemperature 1.0, Top_P 0.95
LicenseOpenMDW License Agreement, version 1.1
Original Modelnvidia/NVIDIA-Nemotron-3.5-Lightning-30B-A3B-BF16

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 is a large language model (LLM) trained 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):

bash
llama-cli \
  -m nemotron-3.5-lightning-30b-a3b-Q4_K_M.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:

bash
llama-server \
  -m nemotron-3.5-lightning-30b-a3b-Q4_K_M.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:

bash
llama-server \
  -m nemotron-3.5-lightning-30b-a3b-Q4_K_M.gguf \
  -md nemotron-3.5-lightning-30b-a3b-dflash.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)

python
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

TaskNemotron-3.5-Lightning-30B-A3B-BF16Nemotron-3.5-Lightning-30B-A3B-NVFP4
General Knowledge
MMLU Pro81.9481.62
AA-Omniscience17.5016.63
Reasoning
GPQA Diamond (no tools)75.4475.57
HLE (text-only, no tools)11.7210.47
SciCode32.6031.38
Coding & Agentic
SWE-bench Verified51.5652.80
SWE-bench Multilingual39.3336.47
Terminal-Bench 2.124.5823.46
PinchBench85.3783.43
BrowseComp36.9736.81
τ³-bench (Banking)9.289.48
GDPval-AA-V2832865
Instruction Following
IFBench (loose)71.8872.88
Long Context
AA-LCR52.0049.19

License and Terms of Use

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