Nemotron 3 Nano 30B A3B
NVIDIA Nemotron 3 Nano 30B A3B is a hybrid Mamba-Transformer MoE model with sparse activation and configurable reasoning traces for efficient inference.
Model Overview
Capabilities, design details, and architectural traits
Nemotron 3 Nano 30B A3B - Hybrid Mamba-Transformer MoE
Nemotron 3 Nano 30B A3B utilizes an architectural design that merges sequence processing with selective associative recall. It leverages sparse activation to maintain broad knowledge while executing with the computational footprint of a much smaller network.
| Architectural Component | Implementation Details |
|---|---|
| Hybrid Layer Interleaving | Integrates 23 Mamba-2 and MoE layers for linear-time sequence processing with 6 Attention layers for precise recall. |
| Expert Routing Mechanism | Utilizes 128 standard experts plus 1 shared expert per MoE layer, routing each token to exactly 6 active experts. |
| Configurable Reasoning Traces | Includes an enable_thinking toggle to bypass ` block generation for low-latency inference workloads. |
Pretraining Optimization
The underlying foundation was pretrained using a specific Warmup-Stable-Decay learning rate schedule before undergoing multi-environment reinforcement learning to stabilize its reasoning outputs.
Benchmark Performance
Independent evaluations · Artificial Analysis
Accuracy & Capability Details
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| Model Details | |||
|---|---|---|---|
| General Info | |||
| Provider | NVIDIA | Anthropic | Anthropic |
| Release Date | December 15, 2025 | September 22, 2026 | September 28, 2026 |
| Knowledge Cutoff | - | - | Jun 2026 |
| Context & Limits | |||
| Context Window | 256K | 1M Best Context Window | 1M Best Context Window |
| Pricing (per 1M tokens) | |||
| Input Pricing | $0.05 Best Input Pricing | $4 | $2 |
| Output Pricing | $0.20 Best Output Pricing | $20 | $10 |
| Modalities | |||
| Inputs | text | textimagefile | textimagefile |
| Outputs | text | text | text |
| Benchmarks (0-100) | |||
| Intelligence Index | 6.8 | 57.6 Best Intelligence Index | 56.0 |
| Coding Index | - | - | - |
| Agentic Index | - | - | - |
Humanity's Last Exam
Extremely difficult logical reasoning and knowledge.
Long Context Reasoning
Logical reasoning over long context windows.
SciCode Benchmark
Scientific coding and mathematical modeling.
Independent evaluation data provided by Artificial Analysis. To view the latest benchmarks and full details, visit their official site.
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