Nemotron 3.5 Lightning
nvidiaothertext

Nemotron 3.5 Lightning

Updated Sep 28, 2026
Parameters
17.8B
Context
1,048,576
License
other
Updated
Sep 28, 2026

Intelligence benchmarks

Artificial Analysis indexes - compared with the best open and proprietary models

Intelligence

12.9

AA Index

Coding

26.8

AA Index

Agentic

3.5

AA Index

Intelligence Index - Nemotron 3.5 Lightning vs. the field

Best open-weight models (you can run locally) and leading proprietary models for context.

Claude Opus 5.5
57.6
closed
Claude Fable 5.1
53.4
closed
GPT-6 Astra
52.7
closed
Muse Spark 1.3
48.1
closed
GPT-6 Sol
47.5
closed
MiMo-V2.6-Pro
46.3
open
GLM-5.3
44.8
open
Nemotron 3.5 Lightning
12.9
open

Coding Index comparison

Claude Fable 5.1
81.6
closed
GPT-6 Astra
77.1
closed
Grok 4.6
76.8
closed
GPT-5.6 Terra
76.7
closed
Muse Spark 1.3
76.5
closed
Kimi K3
76.2
open
GLM-5.3
74.8
open
Nemotron 3.5 Lightning
26.8
open

Agentic Index comparison

Claude Fable 5.1
57.9
closed
Qwen3.8 Max
56
closed
Muse Spark 1.3
55.5
closed
Qwen3.8-Flash-Next
53.6
open
GLM-5.3
53.1
open
Grok 4.6
53
closed
GPT-6 Astra
51
closed
Nemotron 3.5 Lightning
3.5
open

Benchmark data from Artificial Analysis · updated 2026-09-28.

Hosted API cost & speed

What it costs to rent this model instead of running it locally

MetricValue
Input (per 1M tokens)$0.07
Output (per 1M tokens)$0.22
Median speed (hosted API)283 tok/s

Median across hosted providers, measured by Artificial Analysis - updated 2026-09-28. Local llama.cpp speed depends on your hardware — see the hardware pages for estimates.

Standard benchmarks

Performance across standard evaluations

BenchmarkScore
GPQA Diamond74.3
HLE10.6
SciCode32.1

Source: Artificial Analysis component evals - updated 2026-09-28.

Will it run on your hardware?

Pick your GPU memory - see which quantizations fit, and the cheapest card for the rest

Runs on your 24 GB - best at Q8_0
3 of 4 quantizations fit Nemotron 3.5 Lightning with real runtime overhead.
Q4_K_M
10 GB
Q5_K_M
13 GB
Q8_0
19 GB
fits tight too big

Need an exact figure for your context length? Use the VRAM calculator.

Run it locally

Copy-paste - running in under a minute

vLLMOpenAI-compatible API
vllm serve nvidia/NVIDIA-Nemotron-3.5-Lightning-30B-A3B-NVFP4

New to this? Start with Ollama · serve to many users with vLLM.

Deep dive

Notes, sources, and the full write-up

Nemotron 3.5 Lightning is a 17.8B-parameter other model from NVIDIA. It scores 12.9 on the Artificial Analysis Intelligence Index. At Q4_K_M it needs roughly 10 GB of VRAM, placing it in the 8–12 GB GPU hardware tier.

Benchmarks

Artificial Analysis Intelligence Index - Nemotron 3.5 Lightning vs. leading closed models:

ModelIntelligenceCodingGPQA
Nemotron 3.5 Lightning23.6-74.3
Claude Opus 5 (max)63.1-93.2
Claude Fable 5 (with fallback)62.1-92.6
GPT-5.6 Sol (max)60.9-94.1
Grok 4.6 (high)60.9-94.9
Qwen3.8 Max58.1-92.7

Source: Artificial Analysis (2026-08-13).

Popularity

Nemotron 3.5 Lightning has 19,250 downloads in the last month on HuggingFace and 205 likes.

Frequently asked

Quick answers to common questions

How much VRAM does Nemotron 3.5 Lightning need?

Nemotron 3.5 Lightning with 17.8B parameters needs approximately 10 GB at Q4_K_M quantization. Use our VRAM calculator for an exact estimate.

Is Nemotron 3.5 Lightning better than other nvidia models?

Nemotron 3.5 Lightning has 17.8B parameters with 1,048,576 context - a strong choice for general use.

What license is Nemotron 3.5 Lightning under?

Nemotron 3.5 Lightning is released under the other license, making it suitable for most commercial and personal projects.

What hardware runs Nemotron 3.5 Lightning well?

With 17.8B parameters, Nemotron 3.5 Lightning requires adequate VRAM. High-end GPUs like the RTX 4090 (24GB), RTX 5090 (32GB), or Mac Studio with unified memory are good options. Check our hardware directory for specific recommendations.

What is the best quantization for Nemotron 3.5 Lightning?

Q4_K_M is the recommended sweet spot - ~98% of FP16 quality at ~27% of the size. Q5_K_M (~13 GB) is an option if you have spare VRAM. Use our VRAM calculator to compare.

How long can Nemotron 3.5 Lightning's context window handle?

Nemotron 3.5 Lightning supports a 1,048,576-token context window - enough for very long documents, codebases, or multi-turn conversations. Real-world usable context may vary by implementation.

What models compete with Nemotron 3.5 Lightning?

Nemotron 3.5 Lightning competes with other models in its class. Browse our model directory for comparisons, benchmarks, and community reviews to find the best fit.

Nearby options

Similar models and compatible hardware by spec