GPT-6.1 Terra (Xhigh) vs Nemotron 3 Ultra 550B A55B (Reasoning)
Which is better for the money: GPT-6.1 Terra (Xhigh) by OpenAI or Nemotron 3 Ultra 550B A55B (Reasoning) by NVIDIA? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-30.
Clear winner
Verdict
Pick GPT-6.1 Terra (Xhigh)
Nemotron 3 Ultra 550B A55B (Reasoning) vs GPT-6.1 Terra (Xhigh): 73.8% less intelligence, 285.3% more cost to run the AA benchmark, and 58.9% faster end-to-end.
| Metric | GPT-6.1 Terra (Xhigh) | Nemotron 3 Ultra 550B A55B (Reasoning) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 45.0 | 11.8 | −73.8% Nemotron 3 Ultra 550B… is 73.8% less intelligent |
| Total AA cost (lower is better) | $400.18 | $1,541.98 | +285.3% Nemotron 3 Ultra 550B… is 3.9× more expensive |
| End-to-end time (lower is better) | 48.16s | 19.81s | −58.9% Nemotron 3 Ultra 550B… is 58.9% faster |
| Price per 1M tokens (in / out) | $1.00 / $5.00 | $0.60 / $2.70 | |
| Input modalities | Text, Image | Text |
Today's Pareto frontier
Against the frontier
- GPT-6.1 Terra (Xhigh) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Medium) scores 46.10 for $389.
- Nemotron 3 Ultra 550B A55B (Reasoning) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 54.50 for $1124.
GPT-6.1 Terra (Xhigh)Nemotron 3 Ultra 550B A55B (Reasoning)Today'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-6-1-terra-xhigh/nvidia-nemotron-3-ultra-550b-a55b · Markdown: /api/v1/compare/gpt-6-1-terra-xhigh/nvidia-nemotron-3-ultra-550b-a55b?format=md · llms.txt · agent skill