Nemotron 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.

ChatNVIDIA262k tokens$0.0872 / $0.218 · 1M

nvidia/nemotron-3.5-lightning

Context
262k tokens
Completion cap
131,072
Tools
Yes
JSON
Yes
Released
2026-08-11

Call it from Geek Hub

Same OpenAI SDK. Change the base URL and the model id.

curl https://api.geekhub.mx/v1/chat/completions \
  -H "Authorization: Bearer $GEEKHUB_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "nvidia/nemotron-3.5-lightning",
    "messages": [{"role": "user", "content": "Hola"}]
  }'
Get an API key

Frequently asked questions

What is Nemotron 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. Nemotron 3.5 Lightning runs on the Geek Hub API (OpenAI-compatible). Model id: nvidia/nemotron-3.5-lightning.
Is Nemotron 3.5 Lightning free?
No. Input is $0.0872 per 1M tokens and output is $0.218 per 1M tokens on Geek Hub (markup included).
What is the context length of Nemotron 3.5 Lightning?
Nemotron 3.5 Lightning has a 262k tokens context window. It supports up to 131,072 completion tokens.
Does Nemotron 3.5 Lightning support tool calling and structured outputs?
Nemotron 3.5 Lightning accepts tools and tool_choice for function calling. It also supports structured outputs via a JSON schema in response_format.
When was Nemotron 3.5 Lightning released?
Nemotron 3.5 Lightning was released on 2026-08-11.

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