GPT-5.6 Luna (Low) vs Nemotron 3.5 Lightning
Which is better for the money: GPT-5.6 Luna (Low) by OpenAI or Nemotron 3.5 Lightning by NVIDIA? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-27.
Clear winner
Verdict
Pick GPT-5.6 Luna (Low)
Nemotron 3.5 Lightning vs GPT-5.6 Luna (Low): 38.6% less intelligence, 266.5% more cost to run the AA benchmark, and 44.9% slower end-to-end.
| Metric | GPT-5.6 Luna (Low) | Nemotron 3.5 Lightning | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 21.0 | 12.9 | −38.6% Nemotron 3.5 Lightning is 38.6% less intelligent |
| Total AA cost (lower is better) | $27.02 | $99.03 | +266.5% Nemotron 3.5 Lightning is 3.7× more expensive |
| End-to-end time (lower is better) | 5.68s | 8.23s | +44.9% Nemotron 3.5 Lightning is 44.9% slower |
| Price per 1M tokens (in / out) | $0.20 / $1.20 | $0.06 / $0.20 | |
| Input modalities | Text, Image | Text |
Today's Pareto frontier
Against the frontier
- GPT-5.6 Luna (Low) is off the frontier: at the same or lower cost, GPT-6 Luna (Low) scores 21.50 for $10.6.
- Nemotron 3.5 Lightning is off the frontier: at the same or lower cost, Claude Haiku 5.5 (High) scores 37.80 for $94.1.
GPT-5.6 Luna (Low)Nemotron 3.5 LightningToday's Pareto frontierOpen-weights frontierEvery other model
Matchup
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Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gpt-5-6-luna-low/nemotron-3-5-lightning · Markdown: /api/v1/compare/gpt-5-6-luna-low/nemotron-3-5-lightning?format=md · llms.txt · agent skill