LLM Perks

Nvidia Nemotron 3.5 Lightning

Free right now Mid-size New
ReasoningTool useLong contextOpen weights

Nvidia Nemotron 3.5 Lightning is a language model with 30B parameters from NVIDIA. It is currently free at 1 provider with up to 262K tokens of context. The model supports step-by-step reasoning, supports tool calling. Its weights are open, so it can also run locally.

Developer
NVIDIA
Parameters
30B / 3B active
Context
262K tokens
Type
Text
License
Open weights
Free since
November 1, 2026

Where to use Nvidia Nemotron 3.5 Lightning for free

Each row is a separate free endpoint with its own limits.

ProviderContextLimitCard
UnoRouter
nvidia-nemotron-3.5-lightning-30b-a3b:free
262K No-card free models use shared capacity and per-model limits; availability can change. No Open

Quick start

curl https://api.unorouter.com/v1/chat/completions \
  -H "Authorization: Bearer $UNOROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "nvidia-nemotron-3.5-lightning-30b-a3b:free",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Example for UnoRouter. Any OpenAI-compatible client works: Cursor, Cline, OpenCode, Open WebUI.

Benchmarks

Intelligence Index
12.9
GPQA Diamond
74.3%
Humanity's Last Exam
10.6%
Long context (LCR)
60.3%

Source: Artificial Analysis · Nemotron 3.5 Lightning

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FAQ

Is Nvidia Nemotron 3.5 Lightning free?

Yes. As of November 1, 2026, Nvidia Nemotron 3.5 Lightning is free at UnoRouter. Each provider has its own limits — see the table above.

What is the context window of Nvidia Nemotron 3.5 Lightning?

The largest context among free routes is 262,000 tokens. Some providers cap it lower.

How do I call Nvidia Nemotron 3.5 Lightning via API?

Use any OpenAI-compatible client with base URL https://api.unorouter.com/v1, model ID nvidia-nemotron-3.5-lightning-30b-a3b:free, and a UnoRouter key.

How good is Nvidia Nemotron 3.5 Lightning?

Artificial Analysis Intelligence Index: 12.9, GPQA Diamond: 74%. For comparison, the strongest free model in the catalog right now is GLM 5.3 Flash.

Is Nvidia Nemotron 3.5 Lightning open-weight?

Yes, the weights are published — you can download and run it locally, for example with Ollama or LM Studio.