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OpenKey

Nemotron 3 Super (free)

NVIDIAReleased Mar 11, 2026Free

NVIDIA Nemotron 3 Super is a 120B-parameter open hybrid MoE model, activating just 12B parameters for maximum compute efficiency and accuracy in complex multi-agent applications. Built on a hybrid Mamba-Transformer...

Try in playground
Context window
1M tokens
Max output
262K tokens
Input
text
Output
text
Tokenizer
Other
Released
Mar 11, 2026
Reasoning
optional

Pricing

Per 1M tokens. The provider price and our flat 3% fee are separate columns — what you pay is their sum.

Per 1M tokensProvider+ 3% feeYou pay
InputFreeFree
OutputFreeFree

Benchmarks

Artificial Analysis

Intelligence index
25.4
Coding index
37.7
Agentic index
8.7

Supported parameters

  • include_reasoning
  • max_tokens
  • reasoning
  • response_format
  • seed
  • structured_outputs
  • temperature
  • tool_choice
  • tools
  • top_p

Call it

OpenAI-compatible: point your SDK at api.openkey.ai/v1 and use model nvidia/nemotron-3-super-120b-a12b:free.

Code sample language
curl https://api.openkey.ai/v1/chat/completions \
  -H "Authorization: Bearer $OPENKEY_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "nvidia/nemotron-3-super-120b-a12b:free",
    "messages": [{"role": "user", "content": "Hello"}]
  }'
import os
from openai import OpenAI

client = OpenAI(
    base_url="https://api.openkey.ai/v1",
    api_key=os.environ["OPENKEY_API_KEY"],
)

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

const client = new OpenAI({
  baseURL: "https://api.openkey.ai/v1",
  apiKey: process.env.OPENKEY_API_KEY,
});

const completion = await client.chat.completions.create({
  model: "nvidia/nemotron-3-super-120b-a12b:free",
  messages: [{ role: "user", content: "Hello" }],
});
console.log(completion.choices[0].message.content);

Questions

How much does Nemotron 3 Super (free) cost via API?
Nemotron 3 Super (free) is free through OpenKey while NVIDIA offers it at no charge. No fee applies to free models.
What is Nemotron 3 Super (free)'s context window?
Nemotron 3 Super (free) accepts up to 1M tokens of context and returns up to 262K tokens per request.
Is Nemotron 3 Super (free) OpenAI-compatible?
Yes. Send requests to OpenKey's /v1/chat/completions endpoint with model "nvidia/nemotron-3-super-120b-a12b:free" using any OpenAI SDK — only the base URL and API key change.
What inputs does Nemotron 3 Super (free) support?
Nemotron 3 Super (free) accepts text input and produces text output.

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