GPT-5.4 nano (Xhigh) vs Grok 4.3 (High)
Which is better for the money: GPT-5.4 nano (Xhigh) by OpenAI or Grok 4.3 (High) by SpaceXAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-25.
Trade-off
Verdict
Depends on your budget
Grok 4.3 (High) scores 4.2 points higher (24.9 vs 20.7) but costs 1.1× as much to run the benchmark ($363 vs $331; both mid-range class). Pick Grok 4.3 (High) when the extra intelligence is worth the premium, otherwise GPT-5.4 nano (Xhigh).
| Metric | GPT-5.4 nano (Xhigh) | Grok 4.3 (High) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 20.7 | 24.9 | +20.3% Grok 4.3 (High) is 20.3% more intelligent |
| Total AA cost (lower is better) | $331.24 | $363.24 | +9.7% Grok 4.3 (High) is 9.7% more expensive |
| End-to-end time (lower is better) | 80.72s | 28.87s | −64.2% Grok 4.3 (High) is 64.2% faster |
| Price per 1M tokens (in / out) | $0.20 / $1.25 | $1.25 / $2.50 | |
| Input modalities | Text, Image | Text, Image |
Grok 4.3 (High) vs GPT-5.4 nano (Xhigh): 20.3% more intelligence, 9.7% more cost to run the AA benchmark, and 64.2% faster end-to-end.
Today's Pareto frontier
Against the frontier
- GPT-5.4 nano (Xhigh) is off the frontier: at the same or lower cost, MiMo-V2.6-Pro scores 46.30 for $207.
- Grok 4.3 (High) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Medium) scores 47.80 for $361.
GPT-5.4 nano (Xhigh)Grok 4.3 (High)Today's Pareto frontierEvery other model
Matchup
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Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gpt-5-4-nano/grok-4-3 · Markdown: /api/v1/compare/gpt-5-4-nano/grok-4-3?format=md · llms.txt · agent skill