Name: NVIDIA: Nemotron 3.5 Lightning (free)
Author: nvidia

Question 1

What is Nemotron 3.5 Lightning (free)?

Accepted Answer

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.

Question 2

Is Nemotron 3.5 Lightning (free) free?

Accepted Answer

Yes. The pricing shown on this page for Nemotron 3.5 Lightning (free) is zero, so you are not charged for prompt or completion tokens. Free endpoints are rate limited — see the rate limit docs.

Question 3

What is the context length of Nemotron 3.5 Lightning (free)?

Accepted Answer

Nemotron 3.5 Lightning (free) has a 1,000,000 token context window. It supports up to 65,536 completion tokens.

Question 4

Does Nemotron 3.5 Lightning (free) support tool calling and structured outputs?

Accepted Answer

Yes. Nemotron 3.5 Lightning (free) accepts tools and tool_choice for function calling. It does not support response_format, so JSON output is not enforced.

Question 5

What other text models does Nvidia have?

Accepted Answer

Nemotron 3.5 Content Safety (free), Nemotron 3 Ultra, Nemotron 3 Nano Omni (free) and 4 more are other text models from Nvidia.

Question 6

When was Nemotron 3.5 Lightning (free) released?

Accepted Answer

Nemotron 3.5 Lightning (free) was released on 2026-08-11.

NVIDIA: Nemotron 3.5 Lightning (free)

nvidia/nemotron-3.5-lightning:free

NVIDIA: Nemotron 3.5 Lightning (free)

nvidia/nemotron-3.5-lightning:free

Frequently asked questions

Frequently asked questions