Model · Language model

Nemotron Content Safety Reasoning 4B

An ungated 4B content-safety model merged into the Gemma-3-4B-it base that emits harm verdicts with optional reasoning traces as generated text, governed by the NVIDIA Open Model License.

Developer
NVIDIA
Distribution
Downloadable weights · Developer API
Artifact licensing
Restricted artifact terms
License scope
Reviewed release artifacts and mandatory terms; not an assessment of training code or training data openness.
Licenses
NVIDIA Open Model License · Gemma Terms of Use · Gemma Prohibited Use Policy
Boundary
This record represents the nvidia/Nemotron-Content-Safety-Reasoning-4B v1.0 release of November 2025 at Hugging Face commit 29da6ec41d9c710d937afcd41f65e241ab822792. The Gemma-3-4B-it base model, the Nemotron 3 content-safety lines, downstream fine-tunes, the NVIDIA build.nvidia.com trial endpoint, and NIM packaging are separate model or service boundaries.

Risk statements

Not yet examined.

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