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Nemotron 3 Nano 30B A3B

Nemotron 3 Nano 30B A3B is the entry-level tier of NVIDIA's Nemotron 3 family of open models, which also includes the larger Super and Ultra variants. NVIDIA positions the family as its most efficient open lineup for agentic AI, and describes Nano specifically as the smallest member that still outperforms comparable models in accuracy while remaining extremely cost-efficient for inference. The family is aimed at agentic, reasoning, and conversational workloads, with Nano tuned as a unified model that can handle both deliberate chain-of-thought reasoning and direct non-reasoning responses in a single model.

Architecturally, Nano 30B A3B uses a hybrid Mamba-2 plus Mixture-of-Experts design with 30 billion total parameters but only about 3.5 billion active per token, which is the key to its efficiency claims. It was trained by NVIDIA and is distributed openly, with the model collection published on Hugging Face, and it supports English, German, Spanish, French, Italian, and Japanese. The combination of open weights, a sparse active-parameter footprint, and explicit agentic tuning makes it a practical fit for teams that want a self-hostable reasoning model for tool-using assistants, workflow automation, and high-volume inference where operating cost matters more than raw frontier scale.

OpenRouternvidia/nemotron-3-nano-30b-a3bnemotron

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OpenRouter
Model key
nvidia/nemotron-3-nano-30b-a3b
Release date
Dec 15, 2025
Last updated
Dec 15, 2025
Input modalities
Output modalities
Capabilities

Cost

Input token cost
$0.06
Output token cost
$0.24

Limits

Output tokens
235,929 tokens
Context window
262,144 tokens

Transparent token rates

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Rates are shown per one million tokens. Combined means one million input plus one million output tokens.

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Latest news about Nemotron 3 Nano 30B A3B

OpenRouter

Coverage

HokAI's model hub entry explicitly names the NVIDIA Nemotron 3 Nano 30B-A3B and describes it as an open-weight language model built by NVIDIA, released December 14, 2025 as the entry tier of the Nemotron 3 family. It reports benchmark scores from NVIDIA's technical report (arXiv 2512.20848): 73.04% on GPQA, 68.25% on L For tool-use workloads, HokAI reports that giving Nemotron 3 Nano tools lifts AIME accuracy from 89.06% to 99.17%, positioning it as a strong fit for agentic tool-calling pipelines. The page also notes an Artificial Analysis score of 38.8% on SWE-bench Verified. The license is listed as the NVIDIA Open Model License wi

Kilo Gateway

Official source

NVIDIA announced the Nemotron 3 family of open models, releasing the Nano variant alongside its technical report. The family uses a hybrid Mamba-Transformer mixture-of-experts architecture designed for high-throughput agentic inference. Nemotron 3 Nano is a 3.2B active parameter (31.6B total) model that NVIDIA reports as more accurate than GPT-OSS-20B and Qwen3-30B-A3B-Thinking-2507 on popular benchmarks across categories. Nemotron 3 Nano supports context lengths up to 1M tokens and on a single H200 GPU at 8K input / 16K output it delivers 3.3x higher inference throughput than Qwen3-30B-A3B and 2.2x higher than GPT-OSS-20B. Super and Ultra variants, which add LatentMoE, Multi-Token Prediction layers, and NVFP4 training, are planned for later release. The model is positioned for cost-efficient deployment of agentic, reasoning, and conversational workloads.

Kilo Gateway

Official source

NVIDIA published a technical report for Nemotron 3 Nano 30B-A3B, a Mixture-of-Experts hybrid Mamba-Transformer language model with 31.6B total parameters and only 3.2B activated per forward pass. The model was pretrained on 25 trillion text tokens, including more than 3 trillion new unique tokens over Nemotron 2, followed by supervised fine-tuning and large-scale reinforcement learning on diverse environments. Both the pretrained Base and post-trained checkpoints were released on Hugging Face. According to the report, Nemotron 3 Nano achieves better or on-par accuracy compared to GPT-OSS-20B and Qwen3-30B-A3B-Thinking-2507 on popular benchmarks. The model provides up to 2.2x and 3.3x faster inference throughput than those models respectively on an 8K input / 16K output scenario. It also supports context lengths up to 1M tokens and is designed for enhanced agentic, reasoning, and chat capabilities using a granular MoE architecture with 6 of 128 experts activated per token.

Kilo Gateway

CoverageBenchmark

Nemotron 3 Nano (30B A3B) holds a composite LLM Stats Score of 13.6 and sits at rank 198 in the llm-stats.com leaderboard, placing it well behind top-tier proprietary models like Claude Opus 5.5 (60.3) but within the cost-efficient cluster alongside Gemma 4 E4B (13.8) and GPT OSS 120B (28.7). The page reports a blended price of $0.057 per million tokens, framing the model as a budget-tier option among tracked mixture-of-experts systems. On individual benchmarks, the model scores 0.99/1 on AIME 2025 with tools, ranking 10th, and is evaluated on the 55-language WMT24++ multilingual translation suite, giving the model a verifiable technical footprint beyond its average composite. Conversation-depth tracking shows quality holding near 14.2 through turns 11–30 before dipping to 13.0 at turn 31+, a useful signal for long-context agent use cases. These are aggregator figures sourced from build.nvidia.com, not original research.

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