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Nemotron 3.5 Lightning

Model ● Covered in 10 stories + Follow

Nemotron 3.5 Lightning is an open Mixture-of-Experts model from NVIDIA described in coverage as a 30B model with 3B active parameters and a 1M-token context window, positioned for “always-on” agent execution. Recent reports say it has been released alongside NeMo Switchyard, an open-source model router for routing each agent step to a suitable model, and has been made available on Amazon SageMaker JumpStart for easier deployment. Across the coverage, Nemotron 3.5 Lightning has been used for post-training and fine-tuning: CoreWeave reported faster RL-based post-training using reinforcement learning rollouts, and Nvidia/Palantir reported fine-tuning a 30B Nemotron 3.5 Lightning for supply-chain tasks. It has also been mentioned as a potential future on-device component in Perplexity AI’s Portable Computer on Nvidia-powered desktop setups.

Updated 14 October 2026

Specifications

No specifications recorded yet.

Latest developments

CoreWeave targets GPU utilization in continuous AI post-training SiliconANGLE · 1 week ago · 23
Nvidia and Palantir fine-tune a 30B Nemotron model for Nvidia’s supply chain. It beats a model 18 times its size. The New Stack · 1 month ago · 28
Perplexity AI launches Portable Computer on-device AI agent SiliconANGLE · 1 month ago · 30
The Sequence Frontier Learning - Issue 917: Understanding DeepSeek V4-Pro, GLM-5.3, NVIDIA Nemotron 3.5 Lightning and NeMo Switchyard TheSequence · 2 months ago · 52
NVIDIA Nemotron 3.5 Lightning now available in Amazon SageMaker JumpStart Amazon Web Services · 2 months ago · 33
The Sequence Chat - Issue 912: NVIDIA’s Chris Alexiuk Talks About Nemotron, GPUs and Agentic AI Substack · 2 months ago · 6 NVIDIA AI Releases Nemotron 3.5 Lightning: A 30B Open MoE with 3B Active Parameters, and NeMo Switchyard Model Router MarkTechPost · 2 months ago · 10
NVIDIA Nemotron 3.5 Lightning and NeMo Switchyard Deliver Faster, Smarter, More Efficient Agentic AI NVIDIA · 2 months ago · 13

Timeline

Month Quarter Year

October 2026

CoreWeave launched CoreWeave Forge, a full-stack platform connecting agent deployment, evaluation, and reinforcement-learning-based post-training improvements Product launch

September 2026

August 2026

Perplexity released Portable Computer, a locally running version of its Computer agent on supported NVIDIA hardware Deployment

DeepSeek released DeepSeek V4-Pro for general availability (GA) Model release

NVIDIA released Nemotron 3.5 Lightning, a new open mixture-of-experts agent model, along with NeMo Switchyard for model routing Model release

Nvidia released Nemotron 3.5 Lightning and NeMo Switchyard for faster agentic AI and open model routing Model release

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