NVIDIA: Nemotron 3.5 Content Safety (free)

nvidia/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...

Modalities

In / Out Price

$0 / $0 per 1M

Context

128K

Released

Jun 4, 2026

Knowledge Cutoff

—

API

Reroute speaks the OpenAI Chat Completions format. Point any OpenAI SDK at https://www.reroute.wtf/api/v1 and use nvidia/nemotron-3.5-content-safety:free as the model.

You need an API key

Keys start with sk-rr-v1- and are shown once.

Create API key

curl https://www.reroute.wtf/api/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $REROUTE_API_KEY" \
  -d '{
  "model": "nvidia/nemotron-3.5-content-safety:free",
  "messages": [
    { "role": "user", "content": "What is the meaning of life?" }
  ]
}'

Streaming

Set stream: true to receive server-sent events. The final chunk carries usage and cost.

curl -N https://www.reroute.wtf/api/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $REROUTE_API_KEY" \
  -d '{ "model": "nvidia/nemotron-3.5-content-safety:free", "stream": true,
        "messages": [{ "role": "user", "content": "Count to five" }] }'