Claude Opus 5.5 (Xhigh, Default Fallback) vs GPT-5.4 nano (Xhigh)
Which is better for the money: Claude Opus 5.5 (Xhigh, Default Fallback) by Anthropic or GPT-5.4 nano (Xhigh) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-26.
Trade-off
Verdict
Depends on your budget
Claude Opus 5.5 (Xhigh, Default Fallbac… scores 35.3 points higher (56.0 vs 20.7) but costs 12× as much to run the benchmark ($4057 vs $331; flagship vs mid-range cost classes). They are not alternatives at one budget: pick Claude Opus 5.5 (Xhigh, Default Fallbac… when you need intelligence above 20.7, and GPT-5.4 nano (Xhigh) when 20.7 is enough.
| Metric | Claude Opus 5.5 (Xhigh, Default Fallback) | GPT-5.4 nano (Xhigh) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 56.0 | 20.7 | −63.0% GPT-5.4 nano (Xhigh) is 63.0% less intelligent |
| Total AA cost (lower is better) | $4,056.65 | $331.24 | −91.8% GPT-5.4 nano (Xhigh) is 91.8% cheaper |
| End-to-end time (lower is better) | 127.77s | 108.97s | −14.7% GPT-5.4 nano (Xhigh) is 14.7% faster |
| Price per 1M tokens (in / out) | $4.00 / $20.0 | $0.20 / $1.25 | |
| Input modalities | Text, Image | Text, Image |
GPT-5.4 nano (Xhigh) vs Claude Opus 5.5 (Xhigh, Default Fallback): 63.0% less intelligence, 91.8% less cost to run the AA benchmark, and 14.7% faster end-to-end.
Today's Pareto frontier
Against the frontier
- Claude Opus 5.5 (Xhigh, Default Fallback) is on today's frontier: nothing is both smarter and cheaper.
- GPT-5.4 nano (Xhigh) is off the frontier: at the same or lower cost, MiMo-V2.6-Pro scores 46.30 for $207.
Claude Opus 5.5 (Xhigh, Default Fallback)GPT-5.4 nano (Xhigh)Today's Pareto frontierEvery other model
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Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/claude-opus-5-5-xhigh/gpt-5-4-nano · Markdown: /api/v1/compare/claude-opus-5-5-xhigh/gpt-5-4-nano?format=md · llms.txt · agent skill