Hi - I answer from the OpenSmartRoute documentation: routing, the API, plans and quotas, self-hosting. Ask away, or open a support ticket if you need a person.
Grounded in the docs - follow a source before acting on it.
Nemotron 3.5 Content Safety (free) - Model - OpenSmartRoute
Modelv1.0.0
Nemotron 3.5 Content Safety (free)
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, ac
Reference model card from the OpenRouter listing - model nvidia/nemotron-3.5-content-safety:free. Prices are per million tokens as listed; ratings and installs below are from this marketplace.
Nemotron 3.5 Content Safety (free)
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...
Facts
Vendor
NVIDIA
Context window
128,000 tokens
Max output
8,192 tokens
Input price
$0.00 / 1M tokens
Output price
$0.00 / 1M tokens
Input
text, image
Output
text
Tool calling
no
Structured outputs
no
Reasoning
yes
Open weights
nvidia/Nemotron-3.5-Content-Safety
Endpoint: https://openrouter.ai/api/v1 (OpenAI-compatible), model nvidia/nemotron-3.5-content-safety:free
Use it
Copy one of these into your project. Installing also returns the manifest and these snippets.
# after Install: the listing is in your workspace's routing pool - nothing else to configure
curl -s -X POST https://api.opensmartroute.ai/api/v1/route -H 'Authorization: Bearer $OSR_API_KEY' -H 'Content-Type: application/json' -d '{"text": "...", "plan": true}'
# or pin it on the OpenAI-compatible endpoint: {"model": "model-nvidia-nemotron-3-5-content-safety-free", ...}
Manifest
An Open Capability Manifest: the router reads it to know what this does, what it costs and when to pick it.
