NVIDIA: Nemotron 3 Super (free) — Free API

What is NVIDIA: Nemotron 3 Super (free)?

NVIDIA Nemotron 3 Super 120B A12B is an open hybrid MoE model with 120B total parameters (12B active), available free on OpenRouter. Built on a hybrid Mamba-Transformer Mixture-of-Experts architecture with multi-token prediction (MTP), it delivers over 50% higher token generation speed compared to leading open models. Designed for multi-agent applications — long-term agent coherence, cross-document reasoning, and multi-step task planning. Trained with multi-environment RL across 10+ environments. Latent MoE calls 4 experts for the cost of one. Up to 1M context window. Fully open: weights, datasets, and recipes. OpenAI-compatible. Free tier: 200 RPD.

NVIDIA: Nemotron 3 Super (free) API Code Example

Paste your API key and run. See the config generator for Claude Code, Cursor, and more tools.

from openai import OpenAI

client = OpenAI(
    base_url="https://openrouter.ai/api/v1",
    api_key="YOUR_API_KEY"
)

response = client.chat.completions.create(
    model="nvidia/nemotron-3-super-120b-a12b:free",
    messages=[{"role": "user", "content": "Hello!"}]
)
print(response.choices[0].message.content)

import OpenAI from "openai";

const openai = new OpenAI({
  baseURL: "https://openrouter.ai/api/v1",
  apiKey: "YOUR_API_KEY",
});

const completion = await openai.chat.completions.create({
  model: "nvidia/nemotron-3-super-120b-a12b:free",
  messages: [{ role: "user", content: "Hello!" }],
});

console.log(completion.choices[0].message.content);

curl https://openrouter.ai/api/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "model": "nvidia/nemotron-3-super-120b-a12b:free",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

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