What are the hardware requirements for Nemotron H 4B Instruct 128K?

Nemotron H 4B Instruct 128K requires approximately 9 GB of VRAM and supports a context window of 128K tokens. Quantized variants may run on less VRAM; see the Quantized Models section on this page.

Who developed Nemotron H 4B Instruct 128K and how large is it?

Nemotron H 4B Instruct 128K is developed by nvidia, a model with 4b parameters. The model is published as open weights on Hugging Face and indexed on LLM Explorer with full benchmark history.

Where can I download or evaluate Nemotron H 4B Instruct 128K?

Nemotron H 4B Instruct 128K is hosted on Hugging Face and linked from this page. LLM Explorer also lists quantized variants and similar alternatives if available.

Nemotron H 4B Instruct 128K by nvidia — VRAM 9GB, 128K context

Name: Nemotron H 4B Instruct 128K
Author: nvidia

Nemotron H 4B Instruct 128K is an open-source language model by nvidia. Features: 4b LLM, VRAM: 9GB, Context: 128K, License: other, Instruction-Based, LLM Explorer Score: 0.19.

Arxiv:2504.11409 Base model:finetune:nvidia/nem... Base model:nvidia/nemotron-h-4... Conversational En Endpoints compatible Ext 8k Instruct Nvidia Pytorch Region:us Safetensors Sharded Tensorflow

Model Card on HF 🤗: https://huggingface.co/nvidia/Nemotron-H-4B-Instruct-128K

Nemotron H 4B Instruct 128K Parameters and Internals

LLM Name	Nemotron H 4B Instruct 128K
Repository 🤗	https://huggingface.co/nvidia/Nemotron-H-4B-Instruct-128K
Base Model(s)	Nemotron H 4B Base 8K nvidia/Nemotron-H-4B-Base-8K
Model Size	4b
Required VRAM	9 GB
Updated	2026-07-24
Maintainer	nvidia
Model Type	nemotron_h
Instruction-Based	Yes
Model Files	5.0 GB: 1-of-2 4.0 GB: 2-of-2
Supported Languages	en
Context Length	8k
Model Architecture	NemotronHForCausalLM
License	other
Context Length	131072
Model Max Length	131072
Transformers Version	4.45.1
Tokenizer Class	PreTrainedTokenizerFast
Vocabulary Size	131072
Torch Data Type	bfloat16

Rank the Nemotron H 4B Instruct 128K capabilities

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Instruction Following and Task Automation
Factuality and Completeness of Knowledge
Censorship and Alignment
Data Analysis and Insight Generation
Text Generation
Text Summarization and Feature Extraction
Code Generation
Multi-Language Support and Translation

Best Alternatives to Nemotron H 4B Instruct 128K

Best Alternatives	Context / RAM	Downloads	Likes
NVIDIA Nemotron 3 Nano 4B FP8	256K / 5.3 GB	83285	27
NVIDIA Nemotron 3 Nano 4B BF16	256K / 7.9 GB	131	2
... Nemotron 3 Nano 4B OptiQ 4bit	256K / 3.1 GB	855	3
NVIDIA Nemotron 3 Nano 4B 4bit	256K / 2.2 GB	445	2
NVIDIA Nemotron 3 Nano 4B 6bit	256K / 3.2 GB	47	1

Note: green Score (e.g. "73.2") means that the model is better than nvidia/Nemotron-H-4B-Instruct-128K.