Claude Sonnet 5.5 (Xhigh, Default Fallback) vs Nemotron 3.5 Lightning
Which is better for the money: Claude Sonnet 5.5 (Xhigh, Default Fallback) by Anthropic or Nemotron 3.5 Lightning by NVIDIA? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-26.
Depends on your budget
Claude Sonnet 5.5 (Xhigh, Default Fallb… scores 39.0 points higher (51.9 vs 12.9) but costs 23× as much to run the benchmark ($2177 vs $92.8; flagship vs mid-range cost classes). They are not alternatives at one budget: pick Claude Sonnet 5.5 (Xhigh, Default Fallb… when you need intelligence above 12.9, and Nemotron 3.5 Lightning when 12.9 is enough.
| Metric | Claude Sonnet 5.5 (Xhigh, Default Fallback) | Nemotron 3.5 Lightning | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 51.9 | 12.9 | −75.1% Nemotron 3.5 Lightning is 75.1% less intelligent |
| Total AA cost (lower is better) | $2,176.82 | $92.76 | −95.7% Nemotron 3.5 Lightning is 95.7% cheaper |
| End-to-end time (lower is better) | 33.91s | 8.72s | −74.3% Nemotron 3.5 Lightning is 74.3% faster |
| Price per 1M tokens (in / out) | $2.00 / $10.0 | $0.06 / $0.20 | |
| Input modalities | Text, Image | Text |
Nemotron 3.5 Lightning vs Claude Sonnet 5.5 (Xhigh, Default Fallback): 75.1% less intelligence, 95.7% less cost to run the AA benchmark, and 74.3% faster end-to-end.
Against the frontier
- Claude Sonnet 5.5 (Xhigh, Default Fallback) is off the frontier: at the same or lower cost, Claude Opus 5.5 (High, Default Fallback) scores 53.60 for $2172.
- Nemotron 3.5 Lightning is off the frontier: at the same or lower cost, GPT-6 Luna (Xhigh) scores 34.60 for $66.8.
Compare something else
Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/claude-sonnet-5-5-xhigh/nemotron-3-5-lightning · Markdown: /api/v1/compare/claude-sonnet-5-5-xhigh/nemotron-3-5-lightning?format=md · llms.txt · agent skill