
Total parameters	31B (Mamba2-Transformer hybrid MoE)
Active parameters	~3B per token
Max context	256k tokens
Modalities (in)	Video, Audio, Image, Text
Modality (out)	Text
Reasoning mode	On by default; toggle via `enable_thinking`
Best for	Video+speech analysis, document intelligence (OCR/charts/long docs), GUI/agentic workflows, ASR
Minimum GPU (BF16)	1× H100 80GB (single-GPU); 1× B200 / 1× H200 recommended
Minimum GPU (FP8)	1× L40S 48GB; 1× RTX Pro 6000 / 1× B200 recommended
Minimum GPU (NVFP4)	1× RTX 5090 32GB; 1× DGX Spark / 1× Jetson Thor also supported
Precisions	BF16 (62 GB) · FP8 (33 GB) · NVFP4 (21 GB)

Quick Start Guide

Model Parameters

Mode	temperature	top_p	top_k	max_tokens	reasoning_budget	grace_period
Thinking mode	0.6	0.95	—	20480	16384	1024
Instruct mode	0.2	—	1	1024	—	—

Model Overview

Description:

NVIDIA Nemotron 3 Nano Omni is a multimodal large language model that unifies video, audio, image, and text understanding to support enterprise-grade Q&A, summarization, transcription, and document intelligence workflows. It extends the Nemotron Nano family with integrated video+speech comprehension, Graphical User Interface (GUI), Optical Character Recognition (OCR), and speech transcription capabilities, enabling end-to-end processing of rich enterprise content such as meeting recordings, M&E assets, training videos, and complex business documents. NVIDIA Nemotron 3 Nano Omni was developed by NVIDIA as part of the Nemotron model family.

This model is available for commercial use.

This model was improved using Qwen3-VL-30B-A3B-Instruct, Qwen3.5-122B-A10B, Qwen3.5-397B-A17B, Qwen2.5-VL-72B-Instruct, and gpt-oss-120b. For more information, please see the Training Dataset section below.

License/Terms of Use

Governing Terms: Use of this model is governed by the NVIDIA Open Model Agreement

Deployment Geography:

Global

Use Case:

This model is designed for enterprise customers requiring multimodal understanding capabilities. Expected users include:

Customer service applications (e.g., Doordash video of drop-off at a given address via OCR, drive-thru order verification)
Media and Entertainment (M&E) — video and speech analysis, dense captions, video search and summarization
Document intelligence for AI assistants (contracts, SOW/MSA, scientific discovery, financial documents)
GUI automation for AI agentic applications (incident management, agentic search, browser agents, email agents)

Release Date:

Build.Nvidia.com 04/28/2026 via URL
Hugging Face 04/28/2026 via:

NGC 04/28/2026 via URL

Model Architecture:

Architecture Type: Mamba2-Transformer Hybrid Mixture of Experts (MoE)

Network Architecture:

Nemotron 3 Nano LLM (30B A3B) — 31B-parameter Mamba2-Transformer hybrid MoE backbone with ~3B active parameters per token.
CRADIO v4-H — vision encoder for image and video frames.
Parakeet — speech encoder for audio inputs.

Number of model parameters: 3.1 x 10^10 (31B A3B)

Input(s):

Input Type(s): Video, Audio, Image, Text

Input Format(s):

Video: mp4, up to 2 minutes. For 1080p videos, sample up to 1 FPS / 128 frames. For lower-resolution videos such as 720p, higher temporal sampling such as 2 FPS / 256 frames may be used.
Audio: wav, mp3 files (up to 1 hour), 8kHz and higher sampling rates
Image: Red, Green, Blue (RGB) (jpeg, png)
Text: String

Input Parameters:

Video: Three-Dimensional (3D)
Audio: One-Dimensional (1D)
Image: Two-Dimensional (2D)
Text: One-Dimensional (1D)

Other Properties Related to Input:

Maximum context length up to 256k tokens
Language support: English only

Output(s)

Output Type(s): Text

Output Format(s):

Text: String

Output Parameters:

Text: One-Dimensional (1D)

Other Properties Related to Output:

Maximum context length up to 256k tokens.
Supports JSON output format
Supports reasoning output with chain-of-thought
Supports tool calling
Supports word-level timestamps for transcription

Our AI models are designed and/or optimized to run on NVIDIA GPU-accelerated systems. By leveraging NVIDIA's hardware (e.g. GPU cores) and software frameworks (e.g., CUDA libraries), the model achieves faster training and inference times compared to CPU-only solutions.

Software Integration:

Runtime Engine(s):

vLLM
NeMo
Megatron
NeMo-RL

Supported Hardware Microarchitecture Compatibility:

NVIDIA Ampere (A100 80GB SXM/NVLink)
NVIDIA Blackwell (B200 SXM/NVLink, RTX Pro 6000 SE, DGX Spark, Jetson Thor, RTX 5090)
NVIDIA Hopper (H100 SXM/NVLink, H200 SXM/NVLink)
NVIDIA Lovelace (L40S)

Preferred/Supported Operating System(s):

Linux

Inference Runtimes:

vLLM
TensorRT LLM
TensorRT Edge-LLM
llama.cpp
Ollama
SGLang

The integration of foundation and fine-tuned models into AI systems requires additional testing using use-case-specific data to ensure safe and effective deployment. Following the V-model methodology, iterative testing and validation at both unit and system levels are essential to mitigate risks, meet technical and functional requirements, and ensure compliance with safety and ethical standards before deployment.

This AI model can be embedded as an Application Programming Interface (API) call into the software environment described above.

Model Version(s):

Nemotron-3-Nano-Omni-30B-A3B-Reasoning

Download Model Weights

Precision	Technical Name	HuggingFace URL
BF16	`Nemotron-3-Nano-Omni-30B-A3B-Reasoning-BF16`	https://huggingface.co/nvidia/Nemotron-3-Nano-Omni-30B-A3B-Reasoning-BF16
FP8	`Nemotron-3-Nano-Omni-30B-A3B-Reasoning-FP8`	https://huggingface.co/nvidia/Nemotron-3-Nano-Omni-30B-A3B-Reasoning-FP8
NVFP4	`Nemotron-3-Nano-Omni-30B-A3B-Reasoning-NVFP4`	https://huggingface.co/nvidia/Nemotron-3-Nano-Omni-30B-A3B-Reasoning-NVFP4

Install the HuggingFace CLI

bash

pip install -U "huggingface_hub[hf_xet]"
 
# Log in once; the token is cached at ~/.cache/huggingface/token
hf auth login
 
# Sanity check: should print your username and orgs
hf auth whoami

vLLM

Required version: vLLM 0.20.0 is needed. This means one of these containers:

CUDA 13.0: 'vllm/vllm-openai:v0.20.0'

CUDA 12.9: 'vllm/vllm-openai:v0.20.0-cu129'

Container

docker pull vllm/vllm-openai:v0.20.0

Audio support: Within the vLLM container, before running vllm serve, if any audio will be used (including passing use_audio_in_video: true):

python3 -m pip install "vllm[audio]"

General Invocation (1×GPU, e.g. 1×B200)

bash

# vllm serve nvidia/Nemotron-3-Nano-Omni-30B-A3B-Reasoning-BF16 \
# vllm serve nvidia/Nemotron-3-Nano-Omni-30B-A3B-Reasoning-FP8 \
vllm serve nvidia/Nemotron-3-Nano-Omni-30B-A3B-Reasoning-NVFP4 \
  --host 0.0.0.0 \
  --max-model-len 131072 \
  --tensor-parallel-size 1 \
  --trust-remote-code \
  --video-pruning-rate 0.5 \
  --max-num-seqs 384 \
  --allowed-local-media-path / \
  --media-io-kwargs '{"video": {"fps": 2, "num_frames": 256}}' \
  --reasoning-parser nemotron_v3 \
  --enable-auto-tool-choice \
  --tool-call-parser qwen3_coder \
  --kv-cache-dtype fp8 # Omit this for BF16

Efficient Video Sampling: video-pruning-rate=0.5 drops 50% of redundant video tokens; halves video-prefill VRAM/TTFT.

Platform-Specific Notes

RTX Pro: Due to a current bug with FlashInfer + RTX Pro, append: --moe-backend triton

vLLM on DGX Spark (aarch64 / ARM64)

For everything not covered here (API examples, reasoning mode, video tuning), follow the general instructions.

1. Pull the container image

Use the upstream multi-arch vLLM v0.20.0 docker image. Docker will automatically pull the arm64 variant.

docker pull vllm/vllm-openai:v0.20.0

2. Launch the vLLM server on Spark

bash

WEIGHTS=/path/to/nemotron-3-nano-omni-weights

# The image does not include audio packages so we need to install them with "pip install vllm[audio]" as done in the command below
docker run --rm -it \
  --gpus all \
  --ipc=host -p 8000:8000 \
  --shm-size=16g \
  --name vllm-nemotron-omni \
  -v "${WEIGHTS}:/model:ro" \
  --entrypoint /bin/bash \
  vllm/vllm-openai:v0.20.0 -c  \
  "pip install vllm[audio] && vllm serve /model \
  --served-model-name=nemotron_3_nano_omni \
  --max-num-seqs 8 \
  --max-model-len 131072 \
  --port 8000 \
  --trust-remote-code \
  --gpu-memory-utilization 0.8 \
  --limit-mm-per-prompt '{\"video\": 1, \"image\": 1, \"audio\": 1}' \
  --media-io-kwargs '{\"video\": {\"fps\": 2,  \"num_frames\": 256}}' \
  --allowed-local-media-path=/ \
  --enable-prefix-caching \
  --max-num-batched-tokens 32768 \
  --reasoning-parser nemotron_v3 \
  --enable-auto-tool-choice \
  --tool-call-parser qwen3_coder"

In another terminal, verify the server is ready:

curl -sS http://localhost:8000/v1/models | python3 -m json.tool

Key Spark-Specific Flags

Flag	Purpose	Spark Guidance
`--gpus all`	Select GPU	Spark has one GB10 GPU; `all` is equivalent to `device=0`
`--max-model-len`	Max context window	Start at 131072; reduce if you hit OOM (see Memory Tuning below)

Memory Tuning on Spark

Spark uses unified LPDDR5X memory (~128 GB shared between CPU and GPU), not separate system + VRAM pools. Two levers, in order of impact:

Lower --gpu-memory-utilization from 0.85 → 0.70 to free ~19 GB back to the OS and re-enable weight prefetch. Cost: smaller KV cache budget.
Lower --max-model-len to reduce KV cache allocation (e.g. halving context window halves KV cache at --max-num-seqs=1). Combined override:

bash

  --gpu-memory-utilization=0.70 \
  --max-model-len=32768 \

TensorRT-LLM

This model can also be deployed with TensorRT-LLM - see relevant instructions here.

Platform-Specific Notes

TensorRT Edge-LLM

This model can also be deployed with TensorRT Edge-LLM on NVIDIA Jetson Thor - see the Jetson AI Lab model page and the TensorRT Edge-LLM Quick Start Guide.

SGLang

The BF16 variant of this model is supported on SGLang, with the following images:

CUDA 13.0: lmsysorg/sglang:dev-cu13-nemotronh-nano-omni-reasoning-v3
CUDA 12.9: lmsysorg/sglang:dev-nemotronh-nano-omni-reasoning-v3

librosa must be installed first: pip install librosa --break-system-packages

To serve: sglang serve --model-path nvidia/Nemotron-3-Nano-Omni-30B-A3B-Reasoning-BF16 --trust-remote-code

[!NOTE] NVFP4 and FP8 support to come.

Platform-Specific Notes

SGLang on DGX Spark (aarch64 / ARM64)

For everything not covered here (API examples, reasoning mode, video tuning), follow the general instructions.

1. Pull the container image

Use the upstream multi-arch CUDA 13.0 docker image linked above. Docker will automatically pull the arm64 variant.

docker pull lmsysorg/sglang:dev-cu13-nemotronh-nano-omni-reasoning-v3

2. Launch the SGLang server on Spark

bash

WEIGHTS=/path/to/nemotron-3-nano-omni-weights

# The image does not include audio packages so we need to install them with "pip install librosa" as done in the command below
docker run --gpus all -it --rm \
  -p 30000:30000 \
  -v "${WEIGHTS}:/model:ro" \
  --shm-size 16g \
  lmsysorg/sglang:dev-cu13-nemotronh-nano-omni-reasoning-v3 \
  bash -c "pip install librosa && python3 -m sglang.launch_server --model-path /model \
  --host 0.0.0.0 \
  --port 30000 \
  --trust-remote-code \
  --mem-fraction-static 0.8 \
  --max-running-requests 8 \
  --tool-call-parser qwen3_coder \
  --reasoning-parser nemotron_3"

In another terminal, verify the server is ready:

curl -sS http://localhost:30000/v1/models | python3 -m json.tool

Key Spark-Specific Flags

Flag	Purpose	Spark Guidance
`--gpus all`	Select GPU	Spark has one GB10 GPU; `all` is equivalent to `device=0`
`--context-length`	Max context window	Start with default; reduce if you hit OOM (see Memory Tuning below)

Memory Tuning on Spark

Spark uses unified LPDDR5X memory (~128 GB shared between CPU and GPU), not separate system + VRAM pools. Two levers, in order of impact:

Lower --mem-fraction-static from 0.80 → 0.70 to free ~13 GB back to the OS and re-enable weight prefetch. Cost: smaller KV cache budget.
Lower --context-length to reduce KV cache allocation (e.g. halving context window halves KV cache at --max-running-requests=1). Combined override:

bash

  --mem-fraction-static=0.70 \
  --context-length=32768 \

API Client (OpenAI-compatible)

python

from openai import OpenAI
client = OpenAI(base_url="http://localhost:8000/v1", api_key="")
MODEL = "nvidia/Nemotron-3-Nano-Omni-30B-A3B-Reasoning-NVFP4"

Image Example

python

import base64
 
def image_to_data_url(path: str) -> str:
    with open(path, "rb") as f:
        b64 = base64.b64encode(f.read()).decode("utf-8")
    return f"data:image/jpeg;base64,{b64}"
 
image_url = image_to_data_url("media/example1a.jpeg")
 
response = client.chat.completions.create(
    model=MODEL,
    messages=[
        {
            "role": "user",
            "content": [
                {"type": "text", "text": "Describe this image in detail."},
                {"type": "image_url", "image_url": {"url": image_url}},
            ],
        }
    ],
    max_tokens=1024,
    temperature=0.2,
    extra_body={"top_k": 1, "chat_template_kwargs": {"enable_thinking": False}},
)
print(response.choices[0].message.content)

Audio Example

python

from pathlib import Path
 
audio_url = Path("media/2414-165385-0000.wav").resolve().as_uri()
 
response = client.chat.completions.create(
    model=MODEL,
    messages=[
        {
            "role": "user",
            "content": [
                {"type": "audio_url", "audio_url": {"url": audio_url}},
                {"type": "text", "text": "Transcribe this audio."},
            ],
        }
    ],
    max_tokens=1024,
    temperature=0.2,
    extra_body={"top_k": 1, "chat_template_kwargs": {"enable_thinking": False}},
)
print(response.choices[0].message.content)

Video Example

python

from pathlib import Path
 
video_url = Path("media/demo.mp4").resolve().as_uri()
reasoning_budget = 16384
grace_period = 1024
 
response = client.chat.completions.create(
    model=MODEL,
    messages=[
        {
            "role": "user",
            "content": [
                {"type": "video_url", "video_url": {"url": video_url}},
                {"type": "text", "text": "Describe this video."},
            ],
        }
    ],
    max_tokens=20480,
    temperature=0.6,
    top_p=0.95,
    extra_body={
        "thinking_token_budget": reasoning_budget + grace_period,
        "chat_template_kwargs": {
            "enable_thinking": True,
            "reasoning_budget": reasoning_budget,
        },
        "mm_processor_kwargs": {"use_audio_in_video": False},
    },
)
print(response.choices[0].message.content)

Text Example (curl)

bash

curl -sS http://localhost:8000/v1/chat/completions \
  -H "Content-Type: application/json" \
  -d '{"model":"nvidia/Nemotron-3-Nano-Omni-30B-A3B-Reasoning-NVFP4","messages":[{"role":"user","content":"Hello, what can you do?"}],"temperature":0.2,"top_k":1}' \
  | python3 -c "import sys,json; print(json.load(sys.stdin)['choices'][0]['message']['content'])"

PDF Example (page-by-page via Python)

The API accepts images, not raw PDF files. The script below renders each page to PNG and sends it as base64. Save as pdf_vlm_chat.py and install dependencies: pip install pymupdf pillow requests.

pdf_vlm_chat.py (click to expand)

python

#!/usr/bin/env python3
"""Send PDF page(s) as images to a vLLM /v1/chat/completions endpoint."""
from __future__ import annotations
 
import argparse, base64, sys
from io import BytesIO
from pathlib import Path
 
import requests
 
try:
    import fitz
    from PIL import Image
except ImportError:
    print("Install: pip install pymupdf pillow requests", file=sys.stderr)
    sys.exit(1)
 
USER_PROMPT = (
    "Summarize this PDF page: main topic, section headings, important facts "
    "or bullets, and a brief note on each figure or table. "
    "Do not invent text you cannot read."
)
API_URL = "http://localhost:8000/v1/chat/completions"
MODEL = "nvidia/Nemotron-3-Nano-Omni-30B-A3B-Reasoning-NVFP4"
MAX_TOKENS = 32000
DPI = 150
 
 
def page_to_b64(pdf_path: str, idx: int) -> str:
    doc = fitz.open(pdf_path)
    z = DPI / 72.0
    pix = doc.load_page(idx).get_pixmap(matrix=fitz.Matrix(z, z))
    img = Image.frombytes("RGB", [pix.width, pix.height], pix.samples)
    doc.close()
    buf = BytesIO()
    img.save(buf, format="PNG")
    return base64.b64encode(buf.getvalue()).decode("ascii")
 
 
def chat(url, model, b64, text, max_tokens):
    r = requests.post(url, json={
        "model": model,
        "messages": [{"role": "user", "content": [
            {"type": "text", "text": text},
            {"type": "image_url", "image_url": {"url": f"data:image/png;base64,{b64}"}},
        ]}],
        "max_tokens": max_tokens,
        "stream": False,
        "temperature": 0.2,
        "chat_template_kwargs": {"enable_thinking": False},
    }, timeout=120)
    r.raise_for_status()
    return r.json()["choices"][0]["message"]["content"]
 
 
def main():
    p = argparse.ArgumentParser()
    p.add_argument("pdf")
    p.add_argument("--page", type=int, default=0)
    p.add_argument("--all-pages", action="store_true")
    p.add_argument("-o", "--output")
    p.add_argument("--url", default=API_URL)
    p.add_argument("--model", default=MODEL)
    p.add_argument("--max-tokens", type=int, default=MAX_TOKENS)
    a = p.parse_args()
 
    doc = fitz.open(a.pdf); n = len(doc); doc.close()
    pages = range(n) if a.all_pages else [a.page]
    parts = [f"# Extracted: {Path(a.pdf).name}\n\n*Pages: {n}*\n"] if a.all_pages else []
 
    for i in pages:
        print(f"Page {i+1}/{n} ...", file=sys.stderr)
        b64 = page_to_b64(a.pdf, i)
        text = chat(a.url, a.model, b64, f"Page {i+1}.\n\n{USER_PROMPT}", a.max_tokens)
        parts.append(f"\n---\n\n## Page {i+1}\n\n{text.strip()}\n" if a.all_pages else text.strip())
 
    out = "\n".join(parts)
    if a.output:
        Path(a.output).write_text(out + "\n", encoding="utf-8")
    else:
        print(out)
 
if __name__ == "__main__":
    main()

Single page:

python3 pdf_vlm_chat.py /path/to/your_document.pdf --page 0

All pages to markdown:

python3 pdf_vlm_chat.py /path/to/your_document.pdf --all-pages -o extracted.md

Edit USER_PROMPT in the script for different tasks (detailed extraction, table parsing, etc.).

Reasoning Mode (`enable_thinking`)

Setting	Behavior
Default (omitted)	Reasoning is on. The model emits chain-of-thought before the final answer, visible in `content`.
`"chat_template_kwargs": {"enable_thinking": false}`	Reasoning is off. Only the final answer appears in `content`.

To disable reasoning on a request, add to the JSON body:

"chat_template_kwargs": {"enable_thinking": false}

In the Python heredoc pattern, use False (Python boolean), not false (invalid Python).

We recommend thinking mode for tasks that involve reasoning and complex understanding. For video, audio, and omni use cases, try both enabling and disabling thinking for best results.

Advanced: Budget-Controlled Reasoning

python

from typing import Any, Dict, List

from openai import OpenAI
from transformers import AutoTokenizer


class ThinkingBudgetClient:
    def __init__(self, base_url: str, api_key: str, tokenizer_name_or_path: str):
        self.tokenizer = AutoTokenizer.from_pretrained(
            tokenizer_name_or_path, trust_remote_code=True
        )
        self.client = OpenAI(base_url=base_url, api_key=api_key)

    def chat_completion(
        self,
        model: str,
        messages: List[Dict[str, Any]],
        reasoning_budget: int = 512,
        max_tokens: int = 1024,
        **kwargs,
    ) -> Dict[str, Any]:
        assert max_tokens > reasoning_budget, (
            f"reasoning_budget must be less than max_tokens. "
            f"Got {max_tokens=} and {reasoning_budget=}"
        )

        # Step 1: generate only the reasoning trace up to the requested budget.
        response = self.client.chat.completions.create(
            model=model,
            messages=messages,
            max_tokens=reasoning_budget,
            extra_body={
                "top_k": 1,
                "chat_template_kwargs": {
                    "enable_thinking": True,
                },
            },
            **kwargs,
        )
        reasoning_content = response.choices[0].message.content or ""
        if "</think>" not in reasoning_content:
            print("No </think> found in reasoning content")
            reasoning_content = f"{reasoning_content}</think>\n\n"

        reasoning_tokens_len = len(
            self.tokenizer.encode(reasoning_content, add_special_tokens=False)
        )
        remaining_tokens = max_tokens - reasoning_tokens_len
        assert remaining_tokens > 0, (
            f"No tokens remaining for response ({remaining_tokens=}). "
            "Increase max_tokens or lower reasoning_budget."
        )

        # Step 2: continue from the closed reasoning trace and ask for the final answer.
        continued_messages = messages + [
            {"role": "assistant", "content": reasoning_content}
        ]
        prompt = self.tokenizer.apply_chat_template(
            continued_messages,
            tokenize=False,
            continue_final_message=True,
        )
        response = self.client.completions.create(
            model=model,
            prompt=prompt,
            max_tokens=remaining_tokens,
            extra_body={"top_k": 1},
            **kwargs,
        )

        return {
            "reasoning_content": reasoning_content.strip(),
            "content": response.choices[0].text,
            "finish_reason": response.choices[0].finish_reason,
        }

Video Tuning

Frame sampling (`--media-io-kwargs`)

Without explicit settings, vLLM may default to ~32 frames per video regardless of length. Always set --media-io-kwargs at server launch (already included in the General Invocation above):

--media-io-kwargs '{"video": {"fps": 2, "num_frames": 256}}'

Recommended num_frames ranges (at fps=2):

GPU memory	Recommended `num_frames` range
80 GB (A100/H100)	128–512
≤40 GB	64–256

Higher values improve temporal coverage but increase VRAM and prefill time. Start at the low end of the range and increase as your workload and latency budget allow.

Notes

Reasoning default: Reasoning is on by default. If you omit chat_template_kwargs, the model will produce chain-of-thought traces in content. This is appropriate for text and image inputs.
Video frame sampling: The default (~32 frames) is too conservative for most real videos. Set --media-io-kwargs at server launch.
PDF input format: The API does not accept raw PDF uploads. Render pages to PNG and send as base64 (see PDF Example above).
max_tokens vs --max-model-len: max_tokens in the request caps only the completion (generated output). It cannot exceed the server's --max-model-len, which is the hard ceiling for prompt + completion combined. Increase the server flag if you need longer outputs.

Jetson Deployment

For Jetson deployments, vLLM, SGLang, Ollama, llama.cpp, and TensorRT Edge-LLM are supported inference frameworks; see the Jetson AI Lab model page for more details.

TensorRT Edge-LLM support is only for Jetson Thor; TensorRT-LLM is not supported on Jetson.

Training, Testing, and Evaluation Datasets:

Dataset Overview

Total Size: 354,587,705 data points (~717.0B tokens)
Total Number of Datasets: 1395 dataset entries

Dataset partition: Training [100%], Testing [N/A — evaluation benchmarks used separately], Validation [N/A — evaluation benchmarks used separately]
Time period for training data collection: 2019–2025
Time period for testing data collection: N/A (standard public benchmarks)
Time period for validation data collection: N/A (standard public benchmarks)

Dataset Description

Nemotron-Omni extends our commitment from text to multimodal, delivering the same level of openness across text, audio, image, and video.

Adapter and encoder training scale: ~127B tokens across mixed modalities spanning text+image, text+video, text+audio, and text+video+audio—reflecting real-world, contextualized interactions versus single-modality data.

Post-training for real-world tasks: ~124M curated examples across multimodal combinations (text+audio, text+image, text+video, and text+video+audio), structured to support document reasoning, computer use, and long-horizon workflows.

RL environments for agent training: 20 RL datasets across 25 environments covering 5 new multimodal tasks—visual grounding, chart and document understanding, vision-critical STEM problems, video understanding, and automatic speech recognition—extending Nemotron's RL pipeline beyond text into vision and audio.

Modality Breakdown:

Modality	Dataset Entries	Samples	Est. Tokens (M)
text+audio	220	259,178,821	143,533.1
text+image	750	70,143,901	180,347.1
text+video	241	15,837,673	239,631.5
text+video+audio	155	8,720,044	152,499.2
text	12	707,187	958.4
Total	1395	354,587,705	716,969.2

Training data for Nemotron-Omni was assembled from a diverse collection of audio, image, video, and text datasets. Raw datasets were first converted into a standardized JSONL format with unified conversation-turn structure. Audio data was resampled to 16 kHz where needed. Image and video datasets were paired with question-answer annotations, often regenerated or refined using large vision-language models to improve quality and consistency. Quality filtering was applied using model-based judges to remove low-quality, unsafe, or off-topic samples. Deduplication and CSAM scanning were performed across all image datasets. Data was then packed into fixed-length sequences (32k, 128k, or 256k tokens) for efficient training.

Multiple safety measures were implemented throughout the data pipeline. All image/text datasets underwent CSAM (Child Sexual Abuse Material) scanning, with results tracked per dataset. Content safety filtering was applied using two independent safety judge models to flag and remove samples containing harmful content including weapons references, criminal planning, sexual content involving minors, harassment, hate speech, profanity, threats, violence, or suicide-related content. Synthetic data generation pipelines included explicit quality and safety filtering stages. Identity-fix processing was applied to correct potential biases in generated responses. The multi-stage pipeline (original → cleaned → clean+safe → clean+safe+holdout) ensured progressive refinement, with each stage removing additional problematic content.

We built on the base model, applying additional training, enhancements, and optimizations on top of it.

Public Datasets

Dataset	Samples	% of Public	Tokens (M)	Modality
MiraData	28,252,307	55.53%	14,181.3	text+audio+video
laion-disco-12M	7,507,574	14.7%	22,691.0	text+audio
YouTube Video	2,057,000	4.0%	15,390	text+video
YouTube Video and Audio	1,164,000	2.2%	18,730	text+video+audio

Private Datasets

Dataset	Samples	% of Private	Tokens (M)	Modality
Granary	23,370,274	8.0%	1,471.7	text+audio
SIFT-50M	22,837,500	7.8%	5,241.7	text+audio

Self-Sourced Synthetic Data

Overall Size: 41,502,625 samples across modalities: text+audio, text+image, text+video
Description of synthetic data generation methods:

Synthetic data generation (SDG) was used to improve data quality, generate reasoning traces, re-label annotations, and augment existing datasets. Methods include: re-captioning images and audio using vision-language models, generating question-answer pairs from existing media, producing thinking/reasoning chains for complex tasks, paraphrasing prompts for diversity, and applying model-based quality filtering.

NVIDIA-Sourced Synthetic Datasets

Dataset	Modality	Count	Models Used
GroundCUA	text+image	2,797,851	gpt-oss-120b, Qwen3-VL-30B-A3B-Instruct
OpenImages	text+image	2,556,412	Qwen3-VL-30B-A3B-Instruct
MMTrail	text+audio	1,620,533	Qwen3-omni-captioner, gpt-oss-120B
Localized Narratives	text+image	1,511,812	Qwen3-VL-30B-A3B-Instruct
ALLaVA	text+image	1,414,130	Qwen3-VL-30B-A3B-Instruct
VGG-Sound	text+audio	1,371,167	Qwen3-omni-captioner, gpt-oss-120B
PIXMO-CAP	text+image	1,308,838	Qwen3-VL-30B-A3B-Instruct
TTS-Synthesized Nemotron-Nano-3 SFT Data	text+audio	1,226,784	NVIDIA Magpie TTS
MINT-1T	text+image	904,035	Qwen3-VL-32B-Instruct, Gemini 3 Pro for filtering, Scene Text models (RTX) translate
ScaleCUA	text+image	889,010	Qwen3-VL-30B-A3B-Instruct
AgentNet	text+image	878,986	Kimi-K2.5
Conceptual Captions 3M-30b	text+image	867,065	Qwen3-VL-30B-A3B-Thinking-FP8
MetaMathQA	text+image	860,656	Qwen3.5-122B-A10B, Gemini 3 Flash Preview for filtering
Mulberry-SFT COT	text+image	566,982	GLM-4.1V-9B-Thinking, Qwen3.5-122B-A10B, Gemini 3 Flash Preview for filtering
CC for OCR	text+image	522,595	SwinDocSegmenter, DeepSeek OCR, Qwen3.5-122B-A10B, Qwen3-32B, Gemini 3 Flash Preview for filtering, GPT-4o mini for filtering & quality checks, Qwen3-VL-30B-A3B-Thinking-FP8, gpt-oss-120b
Charxiv-100K	text+image	272,104	Qwen3-VL-235B-A22B-Instruct, Qwen3-VL-235B-A22B-Thinking, GPT-4o for filtering, Qwen3.5-122B-A10B
SwinDocSegmenter	text+image	207,200	SwinDocSegmenter, DeepSeek OCR
CLEVR	text+image, text+video	197,027	Qwen3.5-122B-A10B, Gemini 3 Flash Preview for filtering
InternVL-Data	text+image	185,395	Qwen3.5-122B-A10B, Gemini 3 Flash Preview for filtering
Flickr30k Entities	text+image	154,760	Qwen3.5-122B-A10B, Gemini 3 Flash Preview for filtering
Metropolis and Lita	text+video	150,434	Qwen3.5-122B-A10B
TextCaps	text+image	136,911	Commercial VILA model, Qwen3-VL-30B-A3B-Instruct
Vision R1 Llava CoT	text+image	126,024	GLM-4.1V-9B-Thinking
HC-STVG	text+video	124,902	NVIDIA relabeled using Qwen model (Qwen2.5-VL-72B-Instruct)
nvPDFtex	text+image	118,351	gpt-oss-120b, Qwen3.5-122B-A10B
ChartQA	text+image	111,602	Qwen3.5-122B-A10B, Gemini 3 Flash Preview for filtering, Qwen2-VL-72B (NV)
ECD-10k-Images	text+image	110,697	Qwen3.5-122B-A10B
SAMA-COCO	text+image	102,965	gpt-oss-120B
VisualWebInstruct	text+image	97,746	Earlier SDG, GLM-4.1V-9B-Thinking
Spatial	text+image	95,532	Microsoft Florence-2-large
DoubtNut	text+image	94,919	Qwen3.5-122B-A10B, Gemini 3 Flash Preview for filtering
Cosmos Nemotron SFTv13.9	text+image	92,128	Qwen3-VL-30B-A3B-Instruct, Qwen3.5-122B-A10B, Gemini 3 Flash Preview for filtering
CrossTask	text+video	76,495	NVIDIA relabeled using Qwen model (Qwen2.5-VL-72B-Instruct)
RefCOCO	text+image	69,850	Qwen3.5-122B-A10B, Gemini 3 Flash Preview for filtering
Mantis Instruct	text+image	66,975	Qwen3.5-122B-A10B, Gemini 3 Flash Preview for filtering
Visual7W	text+image	62,589	Qwen3.5-122B-A10B
ScreenQA	text+image	62,186	Qwen3.5-122B-A10B
VQAV2	text+image	54,899	Qwen3.5-122B-A10B
TallyQA	text+image	50,073	Qwen3.5-122B-A10B, Gemini 3 Flash Preview for filtering
KeenSight	text+image	49,849	Qwen3.5-122B-A10B, Gemini 3 Flash Preview for filtering
GQA	text+image	42,182	Qwen3.5-122B-A10B, Gemini 3 Flash Preview for filtering
AskFilo	text+image	41,807	Qwen3.5-122B-A10B, Gemini 3 Flash Preview for filtering
Raven	text+image	41,996	gpt-oss-120b
DocVQA	text+image	35,759	Qwen3.5-122B-A10B
TextVQA	text+image	34,602	Commercial VILA model, Qwen3-VL-30B-A3B-Instruct
COCO	text+image	32,111	Qwen3.5-122B-A10B, Gemini 3 Flash Preview for filtering
PlotQA	text+image	30,665	Qwen3.5-122B-A10B, Gemini 3 Flash Preview for filtering
Llava	text+video	30,250	Qwen3-Omni-30B-A3B-Instruct, Qwen3-VL-32B-Instruct
NVCLIP	text+image	29,680	Qwen2.5-72B-Instruct
Tapos	text+video	29,250	Qwen2.5-VL-72B-Instruct
Vedantu Chemistry	text+audio	26,338	NVIDIA Magpie TTS
NV-CC-Img-Text-Dataset	text+image	24,998	Qwen3-VL-30B-A3B-Instruct
DocLayNet	text+image	22,709	Qwen3.5-122B-A10B, Gemini 3 Flash Preview for filtering, gpt-oss-120b
Taloka Grounding	text+image	22,218	Qwen3.5-122B-A10B, Gemini 3 Flash Preview for filtering
Wikipedia OCR	text+image	21,440	Qwen3.5-122B-A10B, Gemini 3 Flash Preview for filtering
InternVL2.5	text+image	20,770	Qwen3-VL-235B-A22B-Instruct, Qwen3-VL-235B-A22B-Thinking, GPT-4o for filtering, Qwen3.5-122B-A10B
PromptPG	text+image	20,305	Qwen2-VL-72B
PubTables	text+image	20,174	gpt-oss-120b
InfoVQA	text+image	18,679	Qwen3.5-122B-A10B, Gemini 3 Flash Preview for filtering
Azure Tables	text+image	18,188	gpt-oss-120b, Qwen3.5-122B-A10B
TabRecSet	text+image	17,437	GPT-4o mini, Qwen3-VL-30B-A3B-Thinking-FP8, gpt-oss-120b, Qwen3.5-122B-A10B
CD Questions	text+audio, text+image	16,335	NVIDIA Magpie TTS, Qwen3.5-122B-A10B, Gemini 3 Flash Preview for filtering
Linguistic Data Consortium	text+image	15,499	Qwen3.5-122B-A10B, GPT-4o mini, Qwen3-VL-30B-A3B-Thinking-FP8, gpt-oss-120b, Ask Kateryna
MapQA	text+image	12,480	Qwen3.5-122B-A10B, Gemini 3 Flash Preview for filtering
SlideVQA	text+image	11,199	Qwen3.5-122B-A10B
OCR Reason Finance	text+image	9,389	Qwen3.5-122B-A10B, Gemini 3 Flash Preview for filtering
GeomVerse	text+image	9,298	GLM-4.1V-9B-Thinking
NextQA	text+video	8,903	Qwen3.5-122B-A10B, Gemini 3 Flash Preview for filtering
UniGeo	text+image	8,822	Qwen3.5-122B-A10B, Gemini 3 Flash Preview for filtering
Vedantu	text+audio, text+image	8,750	NVIDIA Magpie TTS, Qwen3.5-122B-A10B, Gemini 3 Flash Preview for filtering
GPQA	text+audio	7,657	NVIDIA Magpie TTS
SLAKE	text+image	7,294	Qwen3.5-122B-A10B, Gemini 3 Flash Preview for filtering
OpenGVLab	text+image	7,269	Qwen3.5-122B-A10B, Gemini 3 Flash Preview for filtering, Qwen3-VL-235B-A22B-Instruct, Qwen3-VL-235B-A22B-Thinking, GPT-4o for filtering
PerceptionTest	text+video	5,192	Qwen3.5-122B-A10B, Gemini 3 Flash Preview for filtering
InvoicesQA	text+image	4,817	Qwen3.5-122B-A10B
EgoProcel	text+video	4,660	Qwen2.5-VL-72B-Instruct
SynthTabNet	text+image	4,364	gpt-oss-120b
SerpAPI	text+image	3,784	Qwen3.5-122B-A10B, Gemini 3 Flash Preview for filtering
FinTabNet	text+image	3,852	gpt-oss-120b
FastMath	text+image	3,718	Qwen3-VL-235B-A22B-Instruct-FP8
ASR Data Derived Speech-to-Text Chat Data	text+audio	3,608	GPT-OSS 120B
Geometry3k	text+image	2,078	Qwen3-VL-235B-A22B-Thinking-FP8
VQA-RAD	text+image	1,270	Qwen3.5-122B-A10B
RQA	text+audio	959	NVIDIA Magpie TTS
HierText OCRQA Qwen	text+image	514	Qwen2.5-VL-32B-Instruct

Training Dataset:

Data Modality

Audio
Image
Text
Video

Audio Training Data Size

10,000 to 1 Million Hours
(267,898,865 audio-containing samples)

Image Training Data Size

1 Million to 1 Billion Images
(70,143,901 image-containing samples)

Text Training Data Size

1 Billion to 10 Trillion Tokens
(~717.0B tokens total across all modalities)

Video Training Data Size

10,000 to 1 Million Hours
(24,557,717 video-containing samples)

Data Collection Method by dataset

Hybrid: Human, Automated, Synthetic

Labeling Method by dataset

Hybrid: Human, Automated, Synthetic

Properties (Quantity, Dataset Descriptions, Sensor(s)): 354,587,705 total data items across 1395 datasets. The training data spans five modality combinations: text+audio (259,178,821 samples), text+image (70,143,901 samples), text+video (15,837,673 samples), text+video+audio (8,720,044 samples), and text-only (707,187 samples). Content includes publicly available academic datasets, licensed third-party data, NVIDIA-internal collections, and synthetically generated annotations. The data is primarily in English. No sensor-derived data was used.

Evaluation Dataset:

Benchmark Scores:

Task	Multimodal Benchmarks	Nemotron 3 Nano Omni	Nemotron Nano VL V2	% Improvement
Grounding	CVBench2D	83.95	78.3	6.73
Document	OCRBenchV2 (EN)	67.04	54.8	18.26
Computer Use	OSWorld	47.4	11.1	76.58
Chart Reasoning	Charxiv Reasoning	63.6	41.3	35.06
Multi-Image Reasoning	MMlongBench Doc	57.5	38	33.91
Math Reasoning	MathVista_MINI	82.8	75.5	8.82
OCR Reasoning	OCR_Reasoning	54.14	33.9	33.87
Video Q/A	Video MME	72.2	-	-
Video + Audio Q/A	World Sense	55.4	-	-
Video + Audio Q/A	Daily Omni	74.52	-	-
Speech Instruction Following	Voice interaction	89.39	-	-

Quantization Benchmark Scores:

We release FP8 and NVFP4 quantized variants alongside the BF16 model. The FP8 variant quantizes every linear layer in the language model to per-tensor E4M3 (with the exception of the MoE router and lm_head) and pairs it with an FP8 KV cache, yielding 8.5 effective bits per weight (32.8 GB). The NVFP4 variant uses a mixed-precision recipe inspired by Nemotron 3 Super: routed MoE experts are quantized to NVFP4 (FP4 E2M1 values with per-block FP8 E4M3 scales over groups of 16 elements and an additional per-tensor FP32 global scale), while the Mamba in_proj / out_proj, shared experts, and attention o_proj are quantized to FP8, yielding 4.98 effective bits per weight (20.9 GB). In both variants the vision and audio encoders and their MLP projectors are kept in BF16.

The table below reports FP8 & NVFP4 accuracy against a BF16 baseline using non-reasoning mode. Across 9 multimodal benchmarks, both quantized variants stay within 1 point of BF16 on average.

Footprint	BF16	FP8	NVFP4
Size (GB)	61.5	32.8	20.9
Effective bpw	16.00	8.5	4.98

Benchmark	BF16	FP8	NVFP4
MathVista_MINI	71.90	71.05	71.30
Charxiv Reasoning	49.10	48.05	47.95
MMlongBench Doc	46.10	45.84	45.78
OCRBenchV2 (EN)	65.80	65.63	65.77
CVBench2D	84.20	85.62	85.27
Video MME	70.80	69.40	69.60
Daily Omni	74.50	74.06	74.23
World Sense	55.20	54.40	54.60
MMAU	74.62	74.56	74.34
Tedium Long (WER↓)	3.11	3.12	3.04
HF-ASR (WER↓)	5.95	5.97	5.95
Mean (9 non-ASR)	65.80	65.40	65.43
Median (9 non-ASR)	70.80	69.40	69.60
Δ vs BF16 (mean)	---	−0.40	−0.38

Data Collection Method by dataset:

Hybrid: Human, Automated — Evaluation benchmarks are primarily human-curated public academic datasets with automated scoring.

Labeling Method by dataset:

Human

Properties (Quantity, Dataset Descriptions, Sensor(s)): 14 evaluation benchmarks spanning image understanding (MathVistaMini, Charxiv Reasoning, MMLongBench-Doc, OCR Reasoning, OCRBenchV2 English, CVBench2D, OSWorld), video understanding (Video MME), audio/speech understanding (VoiceBench, Tedium Long, HF-ASR, MMAU, World Sense), and multimodal omni-understanding (Daily Omni). All benchmarks are publicly available academic datasets in English.

Prior to training this model, NVIDIA implemented measures to respect EU text and data mining opt-outs by (1) respecting robots.txt instructions to the extent such signals reflect valid rights reservations, and (2) filtering datasets on any actionable metadata identifiers provided by rightsholders.

Inference:

Acceleration Engine: TensorRT-LLM, vLLM, TensorRT Edge-LLM, llama.cpp, ollama, SGlang
Test Hardware:

NVIDIA H100 SXM
NVIDIA H200 SXM
NVIDIA B200 SXM
NVIDIA A100 80GB SXM
NVIDIA GB200 NVL72
NVIDIA RTX PRO 6000 SE Blackwell
NVIDIA L40S PCIe 48GB
NVIDIA DGX Spark
NVIDIA Jetson Thor
NVIDIA RTX 5090

Best Practices

We recommend following settings for reaching the optimal performance.

Sampling Parameters

We suggest the following sampling parameters based on the mode and tasks.

Thinking mode for long document analysis and multimodal reasoning tasks:
temperature=0.6, top_p=0.95, grace_period=1024, reasoning_budget=16384, max_token=20480, and max_model_len=210000
Instruct mode (non-thinking) for general tasks:
temperature=0.2, top_k=1
For ASR tasks, we recommend non-thinking mode with
temperature=1.0, top_k=1

Model output length

For most multimodel reasoning tasks, we recommend using output length of at least 20480. For complex reasoning questions especially in math and programing increasing the maximum output length to 210000 tokens can give the model enough room to produce more detailed and correct answers. We also found the proposed Budget-Controlled Reasoning effectiveness in answering complex reasoning questions.

Ethical Considerations:

NVIDIA believes Trustworthy AI is a shared responsibility and we have established policies and practices to enable development for a wide array of AI applications. When downloaded or used in accordance with our terms of service, developers should work with their internal model team to ensure this model meets requirements for the relevant industry and use case and addresses unforeseen product misuse.

Please make sure you have proper rights and permissions for all input image and video content; if image or video includes people, personal health information, or intellectual property, the image or video generated will not blur or maintain proportions of image subjects included.

For more detailed information on ethical considerations for this model, please see the Model Card++ Bias, Explainability, Safety & Security, and Privacy Subcards.

Please report model quality, risk, security vulnerabilities or NVIDIA AI Concerns here.

Citation:

@misc{nvidia2026nemotron3nanoomni,
      title={Nemotron 3 Nano Omni: Efficient and Open Multimodal Intelligence}, 
      author={NVIDIA},
      year={2026},
      eprint={2604.24954},
      archivePrefix={arXiv},
      primaryClass={cs.LG},
      url={https://arxiv.org/abs/2604.24954}, 
}

lactroiii/Nemotron-3-Nano-Omni-30B-A3B-Reasoning-BF16

At a Glance

Quick Start Guide

Model Parameters

Model Overview

Description:

License/Terms of Use

Deployment Geography:

Use Case:

Release Date:

Model Architecture:

Input(s):

Output(s)

Software Integration:

Model Version(s):

Download Model Weights

Install the HuggingFace CLI

vLLM

Container

General Invocation (1×GPU, e.g. 1×B200)

Platform-Specific Notes

vLLM on DGX Spark (aarch64 / ARM64)

1. Pull the container image

2. Launch the vLLM server on Spark

Key Spark-Specific Flags

Memory Tuning on Spark

TensorRT-LLM

Platform-Specific Notes

TensorRT Edge-LLM

SGLang

Platform-Specific Notes

SGLang on DGX Spark (aarch64 / ARM64)

1. Pull the container image

2. Launch the SGLang server on Spark

Key Spark-Specific Flags

Memory Tuning on Spark

API Client (OpenAI-compatible)

Reasoning Mode (enable_thinking)

Video Tuning

Frame sampling (--media-io-kwargs)

Notes

Jetson Deployment

Training, Testing, and Evaluation Datasets:

Dataset Overview

Dataset Description

Public Datasets

Private Datasets

Self-Sourced Synthetic Data

NVIDIA-Sourced Synthetic Datasets

Training Dataset:

Evaluation Dataset:

Inference:

Best Practices

Sampling Parameters

Model output length

Ethical Considerations:

Citation:

lactroiii/
Nemotron-3-Nano-Omni-30B-A3B-Reasoning-BF16

Reasoning Mode (`enable_thinking`)

Frame sampling (`--media-io-kwargs`)