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NVIDIA: Nemotron 3.5 Lightning (free): AI model

Context window:
1,000,000 tokens
Pricing:
$0.00/M in · $0.00/M out
Type:
text
  • Tools
  • Streaming
  • Long context

Thinking levels:

NVIDIA: Nemotron 3.5 Lightning (free) is a AI model from NVIDIA, available through Hormouz via an OpenAI-compatible API with stable access from inside Iran.

NVIDIA Nemotron 3.5 Lightning is an open mixture-of-experts model from NVIDIA, with 3B active parameters out of 30B total. It is suited for high-throughput agentic workloads and specialized tasks that...

Quickstart

curl https://api.hormouz.net/v1/chat/completions \
  -H "Authorization: Bearer ng-YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "nvidia/nemotron-3.5-lightning:free",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Specs

VendorNVIDIA
TypeText
Context window1,000,000 tokens
Pricing$0.00/M in · $0.00/M out
APIChat Completions
CapabilitiesStreaming · Tools

Benchmarks

12.9
Intelligence Index
Better than 21% of models we compared
26.8
Coding Index
Better than 30% of models we compared
3.5
Agentic Index
Better than 28% of models we compared

Reasoning

GPQA Diamond
Graduate-level scientific reasoning
74.3%
HLE
Humanity's Last Exam
10.6%
AA-LCR
Long-context reasoning
60.3%
CritPt
Research-level physics reasoning
0%
AA Omniscience
Broad factual knowledge accuracy
14.4%
Non-Hallucination
Rate of avoiding fabricated answers
62.4%

Coding

SciCode
Python for scientific computing
32.1%

Agentic

GDPval
Economically valuable tasks
7.1%

Source: Artificial Analysis

Code example

cURL
curl https://api.hormouz.net/v1/chat/completions \
  -H "Authorization: Bearer ng-YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "nvidia/nemotron-3.5-lightning:free",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'
Python
from openai import OpenAI
client = OpenAI(api_key="ng-YOUR_API_KEY", base_url="https://api.hormouz.net/v1")
response = client.chat.completions.create(
    model="nvidia/nemotron-3.5-lightning:free",
    messages=[{"role": "user", "content": "Hello!"}],
)
print(response.choices[0].message.content)
JavaScript
import OpenAI from "openai";
const client = new OpenAI({ apiKey: "ng-YOUR_API_KEY", baseURL: "https://api.hormouz.net/v1" });
const response = await client.chat.completions.create({
  model: "nvidia/nemotron-3.5-lightning:free",
  messages: [{ role: "user", content: "Hello!" }],
});
console.log(response.choices[0].message.content);

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Updated 2026-10-13