NVIDIA today announced Nemotron-4 340B, a family of open models that developers can use to generate synthetic data for training large language models (LLMs) for commercial applications across healthcare, finance, manufacturing, retail and every other industry.
High-quality training data plays a critical role in the performance, accuracy and quality of responses from a custom LLM - but robust datasets can be prohibitively expensive and difficult to access.
Through a uniquely permissive open model license, Nemotron-4 340B gives developers a free, scalable way to generate synthetic data that can help build powerful LLMs.
The Nemotron-4 340B family includes base, instruct and reward models that form a pipeline to generate synthetic data used for training and refining LLMs. The models are optimized to work with NVIDIA NeMo, an open-source framework for end-to-end model training, including data curation, customization and evaluation. They're also optimized for inference with the open-source NVIDIA TensorRT-LLM library.
Nemotron-4 340B can be downloaded now from the NVIDIA NGC catalog and from Hugging Face, where developers can also use the Train on DGX Cloud service to easily fine-tune open AI models. Developers will soon be able to access the models at ai.nvidia.com, where they'll be packaged as an NVIDIA NIM microservice with a standard application programming interface that can be deployed anywhere.
Navigating Nemotron to Generate Synthetic Data LLMs can help developers generate synthetic training data in scenarios where access to large, diverse labeled datasets is limited.
The Nemotron-4 340B Instruct model creates diverse synthetic data that mimics the characteristics of real-world data, helping improve data quality to increase the performance and robustness of custom LLMs across various domains.
Then, to boost the quality of the AI-generated data, developers can use the Nemotron-4 340B Reward model to filter for high-quality responses. Nemotron-4 340B Reward grades responses on five attributes: helpfulness, correctness, coherence, complexity and verbosity. It's currently first place on the Hugging Face RewardBench leaderboard, created by AI2, for evaluating the capabilities, safety and pitfalls of reward models.
In this synthetic data generation pipeline, (1) the Nemotron-4 340B Instruct model is first used to produce synthetic text-based output. An evaluator model, (2) Nemotron-4 340B Reward, then assesses this generated text - providing feedback that guides iterative improvements and ensures the synthetic data is accurate, relevant and aligned with specific requirements. Researchers can also create their own instruct or reward models by customizing the Nemotron-4 340B Base model using their proprietary data, combined with the included HelpSteer2 dataset.
Fine-Tuning With NeMo, Optimizing for Inference With TensorRT-LLM Using open-source NVIDIA NeMo and NVIDIA TensorRT-LLM, developers can optimize the efficiency of their instruct and reward models to generate synthetic data and to score responses.
All Nemotron-4 340B models are optimized with TensorRT-LLM to take advantage of tensor parallelism, a type of model parallelism in which individual weight matrices are split across multiple GPUs and servers, enabling efficient inference at scale.
Nemotron-4 340B Base, trained on 9 trillion tokens, can be customized using the NeMo framework to adapt to specific use cases or domains. This fine-tuning process benefits from extensive pretraining data and yields more accurate outputs for specific downstream tasks.
A variety of customization methods are available through the NeMo framework, including supervised fine-tuning and parameter-efficient fine-tuning methods such as low-rank adaptation, or LoRA.
To boost model quality, developers can align their models with NeMo Aligner and datasets annotated by Nemotron-4 340B Reward. Alignment is a key step in training LLMs, where a model's behavior is fine-tuned using algorithms like reinforcement learning from human feedback (RLHF) to ensure its outputs are safe, accurate, contextually appropriate and consistent with its intended goals.
Businesses seeking enterprise-grade support and security for production environments can also access NeMo and TensorRT-LLM through the cloud-native NVIDIA AI Enterprise software platform, which provides accelerated and efficient runtimes for generative AI foundation models.
Evaluating Model Security and Getting Started The Nemotron-4 340B Instruct model underwent extensive safety evaluation, including adversarial tests, and performed well across a wide range of risk indicators. Users should still perform careful evaluation of the model's outputs to ensure the synthetically generated data is suitable, safe and accurate for their use case.
For more information on model security and safety evaluation, read the model card.
Download Nemotron-4 340B models via NVIDIA NGC and Hugging Face. For more details, read the research papers on the model and dataset.
See notice regarding software product information.
North America Stories
25/12/2025
Holiday lights are twinkling, hot cocoa's on the stove and gamers are settling in for a well-earned break.
Whether staying in or heading on a winter getawa...
24/12/2025
What is AI good for? Posted by MTI Film on December 24, 2025
What is AI good for?
What is AI good for?
It's been three years since ChatGPT first cap...
24/12/2025
Share Share by:
Copy link
Facebook
X
Whatsapp
Pinterest
Flipboard...
24/12/2025
Share Share by:
Copy link
Facebook
X
Whatsapp
Pinterest
Flipboard...
24/12/2025
Share Share by:
Copy link
Facebook
X
Whatsapp
Pinterest
Flipboard...
24/12/2025
Share Share by:
Copy link
Facebook
X
Whatsapp
Pinterest
Flipboard...
24/12/2025
Share Share by:
Copy link
Facebook
X
Whatsapp
Pinterest
Flipboard...
24/12/2025
Back to All News
The Boyfriend' Season 2 Unveils Heartwarming Trailer, Key...
24/12/2025
Back to All News
Love, Fights, and Everything in Between: Badly in Love' Returns for Season 2
Entertainment
24 December 2025
GlobalJapan
Link copied t...
24/12/2025
Scripps Research study links sleep variability with sleep apnea and hypertension How consumers' digital activity trackers could enable personalized health s...
23/12/2025
How guilas Cibae as Dominican Winter League Games Are Locally Produced for Glob...
23/12/2025
BitFire's Jim Akimchuk on Supplying Scalability and Customization in the Clo...
23/12/2025
CAMB.AI Enables European Athletics to Offer Multi-Language SupportPlan is to eventually offer translation into all languages spoken in EuropeBy Ken Kerschbaumer...
23/12/2025
Analysis: As sports media values trend negative, scarcity and quality are king By Callum McCarthy, Editor-at-Large
Monday, December 22, 2025 - 14:08
Print ...
23/12/2025
ESPN, Disney, and NBA Return to the Animated Altcast Fray With Second Edition of...
23/12/2025
End the Year on a High Note and Donate to the Sports Broadcasting Fund Today! By Ken Kerschbaumer, Editorial Director
Tuesday, December 23, 2025 - 12:25 pm
...
23/12/2025
A Zeus motor is hot fire tested at L3Harris' Camden, Arkansas, solid rocket ...
23/12/2025
Share Share by:
Copy link
Facebook
X
Whatsapp
Pinterest
Flipboard...
23/12/2025
Share Share by:
Copy link
Facebook
X
Whatsapp
Pinterest
Flipboard...
23/12/2025
Lightware will exhibit several major product innovations at ISE 2026, including the new USB-C BOOSTER-V1, Google Meet. integration for various Taurus UCX models...
23/12/2025
Share Share by:
Copy link
Facebook
X
Whatsapp
Pinterest
Flipboard...
23/12/2025
Share Share by:
Copy link
Facebook
X
Whatsapp
Pinterest
Flipboard...
23/12/2025
Share Share by:
Copy link
Facebook
X
Whatsapp
Pinterest
Flipboard...
23/12/2025
Share Share by:
Copy link
Facebook
X
Whatsapp
Pinterest
Flipboard...
23/12/2025
Share Share by:
Copy link
Facebook
X
Whatsapp
Pinterest
Flipboard...
23/12/2025
Taking the Stage at Carnegie Hall-On a Global Scale Boston Conservatory Orchestra students reflect on their epic concert marking the 80th session of the UN Gene...
23/12/2025
Back to All News
Netflix's The Great Flood and Culinary Class Wars 2 Top Gl...
23/12/2025
Back to All News
Stranger Things By the Numbers: How the Global Phenomenon Shap...
23/12/2025
Experience the power of WO Automation for Radio's newest service, the System Effectiveness Review. Designed to help you achieve more, a System Effectiveness...
23/12/2025
Back to All News
How Steamy Can It Get? Single's Inferno' Season 5 Pre...
23/12/2025
Back to All News
33 Million Global Viewers on Netflix Watched Jake Paul vs. Ant...
23/12/2025
New technique lights up where drugs go in the body, cell by cell Scripps Research scientists developed a technique that maps drug binding in individual cells th...
22/12/2025
SVG New Sponsor Spotlight: Presidio's Neerav Shah on the Role of Its Captiva...
22/12/2025
Hitting the bullseye: Sky Sports readies itself for the biggest PDC World Darts ...
22/12/2025
Unique skillset: Bringing new directors to the world of darts at The Worlds with...
22/12/2025
Gravity Media prepares for a flight of fancy with the PDC World Darts Championsh...
22/12/2025
One hundred and eighty: Gravity Media on hitting the production bullseye at the ...
22/12/2025
The Famous Group's Jon Slusser on Fascinating Fans Through Immersive Content...
22/12/2025
ESPN's Meg Aronowitz on Continuing High-Quality Broadcasts of Collegiate Spo...
22/12/2025
ESPN Takes Data-Driven Storytelling to New Heights with MNF Playbook with Next ...
22/12/2025
Paramount Scores Largest Share Increase Among Distributors as Paramount and CBS...
22/12/2025
New multi-year deal integrates Roku's data to fuel Nielsen's measurement suite
Roku gains access to Nielsen's streaming ratings, showing The Roku C...
22/12/2025
Share Share by:
Copy link
Facebook
X
Whatsapp
Pinterest
Flipboard...
22/12/2025
Berklee Wrapped 2025: Our Top News and Stories A look back at a year highlighted by faculty milestones, major film and television projects, Bob Dylan's ho...
22/12/2025
The works of Plato state that when humans have an experience, some level of change occurs in their brain, which is powered by memory - specifically long-term me...
22/12/2025
Workflows allow you to create a sequence of planned events which may be added to your template(s) or inserted directly into your sequential or background playli...
22/12/2025
Back to All News
Global Anime Hits and New Releases Take Center Stage at Jump Festa 2026
Entertainment
22 December 2025
GlobalJapan
Link copied to clipboar...
21/12/2025
Back to All News
Legoshi and Haru's Story Reaches Its Finale: BEASTARS Fin...
NVIDIA today announced Nemotron-4 340B, a family of open models that developers can use to generate synthetic data for training large language models (LLMs) for commercial applications across healthcare, finance, manufacturing, retail and every other industry.
