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Nemotron Lightning 3.5 30B A3B

Ready
model path:accounts/fireworks/models/nemotron-lightning-3p5-30b-a3b

Nemotron-Lightning-3.5-30B-A3B is a 30B-parameter Mixture-of-Experts language model (3B active) from NVIDIA’s Nemotron-H family, built on a hybrid Mamba-Transformer architecture for efficient long-context inference. Like other models in the family, it responds to queries by first generating a reasoning trace and then concluding with a final response, with reasoning behavior configurable through a flag in the chat template. It includes a multi-token prediction (MTP) speculative decoding head for low-latency serving.

Nemotron Lightning 3.5 30B A3B API Features

Serverless

Docs

Nemotron Lightning 3.5 30B A3B is available via Fireworks' serverless API, where you pay per token. There are several ways to call the Fireworks API, including Fireworks' Python client, the REST API, or OpenAI's Python client.

On-demand Deployment

Docs

On-demand deployments allow you to use Nemotron Lightning 3.5 30B A3B on dedicated GPUs with Fireworks' high-performance serving stack with high reliability and no rate limits.

Available Serverless

$0.05 / $0.01 / $0.20

Run queries immediately, pay only for usage

Per 1M Tokens (input/cached input/output)

Metadata

State
Ready
Created on
7 AUG, 2026
Kind
Base model
Provider
NVIDIA

Specifications

Calibrated
No
Mixture-of-Experts
Yes
Parameters
32.9B

Supporting Functionality

Fine-tuning
Not Supported
Serverless
Supported
Context Length
262k tokens
Function Calling
Supported
Embeddings
Not Supported
Rerankers
Not Supported
Supporting image input
Not Supported