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NVIDIA Nemotron 3.5 Lightning 30B-A3B NVFP4 vs NVIDIA Nemotron 3 Ultra 550B-A55B NVFP4

SpecNVIDIA Nemotron 3.5 Lightning 30B-A3B NVFP4NVIDIA Nemotron 3 Ultra 550B-A55B NVFP4
Respan Index16.0 (#142)28.8 (#86)
Blended price per 1M$0.078$0.925
Context window1M1M
Input / output per 1M$0.05 / $0.16$0.5 / $2.2
Max output--
Inputtexttext
Released2026-08-112026-06-04

Respan Index by category

Each category is scored 0 to 100, and how far ahead the winner is. Leads under a point are close to even.

CategoryNVIDIA Nemotron 3.5 Lightning 30B-A3B NVFP4NVIDIA Nemotron 3 Ultra 550B-A55B NVFP4
Coding1.7 NVIDIA Nemotron 3.5 Lightning 30B-A3B NVFP46.7 NVIDIA Nemotron 3 Ultra 550B-A55B NVFP4
Agents14.0 NVIDIA Nemotron 3.5 Lightning 30B-A3B NVFP433.6 NVIDIA Nemotron 3 Ultra 550B-A55B NVFP4
Reasoning20.1 NVIDIA Nemotron 3.5 Lightning 30B-A3B NVFP431.5 NVIDIA Nemotron 3 Ultra 550B-A55B NVFP4
Knowledge & language12.3 NVIDIA Nemotron 3.5 Lightning 30B-A3B NVFP435.3 NVIDIA Nemotron 3 Ultra 550B-A55B NVFP4
Human preference38.8 NVIDIA Nemotron 3.5 Lightning 30B-A3B NVFP449.0 NVIDIA Nemotron 3 Ultra 550B-A55B NVFP4

How the Respan Index works

Benchmarks both report

NVIDIA Nemotron 3 Ultra 550B-A55B NVFP4 leads on 6 of the 6 benchmarks both report. Higher is better. Each score links to where it was published.

BenchmarkNVIDIA Nemotron 3.5 Lightning 30B-A3B NVFP4NVIDIA Nemotron 3 Ultra 550B-A55B NVFP4
LMArena Elo13531427
BrowseComp36.8%41.4%
GPQA Diamond75.6%87.9%
Humanity's Last Exam (no tools)10.5%26.1%
SWE-bench Verified52.8%69.7%
Terminal-Bench 2.123.5%53.9%

FAQ

Is NVIDIA Nemotron 3.5 Lightning 30B-A3B NVFP4 better than NVIDIA Nemotron 3 Ultra 550B-A55B NVFP4?

NVIDIA Nemotron 3 Ultra 550B-A55B NVFP4 scores 28.8 on the Respan Index (#86), ahead of NVIDIA Nemotron 3.5 Lightning 30B-A3B NVFP4 at 16.0 (#142). NVIDIA Nemotron 3 Ultra 550B-A55B NVFP4 leads on 6 of the 6 benchmarks both report.

Which is cheaper, NVIDIA Nemotron 3.5 Lightning 30B-A3B NVFP4 or NVIDIA Nemotron 3 Ultra 550B-A55B NVFP4?

NVIDIA Nemotron 3.5 Lightning 30B-A3B NVFP4 lists at $0.05 input and $0.16 output per 1M tokens; NVIDIA Nemotron 3 Ultra 550B-A55B NVFP4 at $0.5 and $2.2. NVIDIA Nemotron 3.5 Lightning 30B-A3B NVFP4 is 12x cheaper per token at list price.

Which has the larger context window?

Both accept 1M tokens of context.

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