Nemotron 3.5 Lightning

Name: Nemotron 3.5 Lightning
Brand: nvidia
Price: 0.08 USD
Availability: OnlineOnly

Nemotron:

NVIDIA Nemotron 3 Super (free)

3.5 Lightning

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 benefit from domain-specific customization. A free-tier endpoint is also available on OpenRouter.

OpenRouter Docs

Provider: NVIDIA
Released: 2026-08-11
Size: MEDIUM
Free API (OpenRouter): Yes, 1 provider (via OpenRouter)
Per 1M tokens: $0.08 in · $0.20 out
Rival’s tab: $0.07; 58/58 receipts survived

Free API endpoint listed

Nemotron 3.5 Lightning has a free endpoint in Rival’s OpenRouter listings. Free requests have usage limits and depend on provider availability.

Provider data: 9 Sep 2026OpenRouter usage limits

View free endpoint

Get API accessProvider and language code samples

2 hostsInOutContextUptime

DeepInfrabf16$0.08 in$0.20 out262k100% up CoreWeavebf16$0.10 in$0.25 out262k100% up

Per million tokens. Prices and uptime via OpenRouter, checked 9 Sep 2026.

Provider

fromimport openai  OpenAI

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

response = client.chat.completions.create(
"nvidia/nemotron-3.5-lightning:free"    model=,
"role""user""content""Hello!"    messages=[{: , : }],
)
print(response.choices[0].message.content)

Set OPENROUTER_API_KEY with your OpenRouter API key from openrouter.ai/keys.

Deep analysisPsychometrics, taste index, writing DNA

Writing DNA

Stylometric Fingerprint

Based on 27 text responses

Tick = global average

Vocabulary Diversity55%

Unique words vs. total words. Higher = richer vocabulary.

Sentence Length16.4 words

Average words per sentence.

Hedging0.45

"Might", "perhaps", "arguably" per 100 words.

Bold Formatting4.6

**Bold** markers per 1,000 characters.

List Usage3.2

Bullet and numbered list items per 1,000 characters.

Section Structure0.50

Markdown headings per 1,000 characters.

Emoji Usage0.06

Emoji per 1,000 characters.

Transitions0.11

"However", "moreover", "furthermore" per 100 words.

Opening Habits

Consistency

77%

Across 27 responses

Favorites

Movie

The Shawshank Redemption

19948.7

Album

OK Computer

Radiohead

Book

Don Quijote de la Mancha

Miguel de Cervantes Saavedra

City

Tokyo

Japan

Game

The Legend of Zelda: Ocarina of Time

Adventure, Action4.4

Model Responses

53 outputs · $0.07 tracked across 53 receipts

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