Using Nemotron 3.5 Content Safety on OpenRouter

Implementation guide · Nemotron 3.5 · NVIDIA AI

ServerlessOpen Weights

OpenRouter exposes Nemotron 3.5 Content Safety through model ID nvidia/nemotron-3.5-content-safety. Use the setup steps, sourced pricing, capabilities, and official provider links below to validate this route before deployment.

Last refreshed 2026-10-15. Next refresh: weekly.

Quick Start

  1. 1
    Create an account at OpenRouter and generate an API key.
  2. 2
    Use the OpenRouter SDK or REST API to call nvidia/nemotron-3.5-content-safety — see the documentation for request format.
  3. 3
    You'll be billed $0.20/1M input, $0.20/1M output tokens. See full pricing.
API PortalDocumentationPricingModel Card

Code Examples

See OpenRouter documentation for integration details.

Pricing on OpenRouter

TypePrice (per 1M)
Input tokens$0.20
Output tokens$0.20

Capabilities

VisionMultimodalReasoning

About Nemotron 3.5 Content Safety

Nemotron 3.5 Content Safety is NVIDIA's 4B multimodal, multilingual content-safety moderator, fine-tuned from Google Gemma 3 4B IT. It labels user prompts (with an optional image) and model responses as safe or unsafe using the Aegis 2.0 taxonomy, and adds a custom-policy mode that can emit a short reasoning trace. It merges the Nemotron 3 Content Safety and Content Safety Reasoning 4B models, supports 12 languages and up to 128K context, and ships as open weights under OpenMDW 1.1 plus the Gemma Terms of Use.

Full model details →

Model Specs

Released2026-06-02
Parameters4B
Context128K
ArchitectureDecoder Only

More Models on OpenRouter

Nemotron 3.5 LightningNemotron 3.5 Super VL
All models on OpenRouter →

Provider

OpenRouter

OpenRouter, Inc.

New York, NY, USA