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NVIDIA: Nemotron 3.5 Content Safety.

multimodal closed 131K ctx
Cheapest input
$0.2/M
on OpenRouter
Cheapest output
$0.2/M
on OpenRouter
Hosted equiv.
~$0.07/hr
@ 100 tok/s on OpenRouter

NVIDIA Nemotron 3.5 Content Safety is a compact 4B-parameter multimodal guardrail model from NVIDIA, fine-tuned from Google Gemma-3-4B. It moderates both inputs to and responses from LLMs and VLMs, accepting...

Hosted API only

No self-host path — closed weights.

NVIDIA: Nemotron 3.5 Content Safety's weights aren't published. Use it via the access providers below.

Where to use it

Cheapest hosted endpoints.

Provider Access $/M in $/M out
OpenRouter api aggregator $0.2 $0.2 Launch ↗
FAQ

Frequently asked.

How do I run NVIDIA: Nemotron 3.5 Content Safety?
NVIDIA: Nemotron 3.5 Content Safety is a closed-source API model. The cheapest way to access it is through the API providers listed on this page (direct API, aggregators, and hosted chat UIs).
Where can I access NVIDIA: Nemotron 3.5 Content Safety?
NVIDIA: Nemotron 3.5 Content Safety is available via OpenRouter. Each access option lists its own pricing (per million tokens or hourly hosting).
How much does it cost to run NVIDIA: Nemotron 3.5 Content Safety?
API pricing starts at $0.2/M input tokens and $0.2/M output tokens. Self-hosting cost depends on the GPU you rent — see the Run It Yourself tab.
Is NVIDIA: Nemotron 3.5 Content Safety open-source or proprietary?
NVIDIA: Nemotron 3.5 Content Safety is a proprietary model from Nvidia. Access is API-only — there are no public weights to download.