GPT-5.5 (High) vs Grok 4.3 (Non-reasoning)
Which is better for the money: GPT-5.5 (High) by OpenAI or Grok 4.3 (Non-reasoning) by SpaceXAI? 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
GPT-5.5 (High) scores 23.0 points higher (37.0 vs 14.0) but costs 14× as much to run the benchmark ($3411 vs $250; flagship vs mid-range cost classes). They are not alternatives at one budget: pick GPT-5.5 (High) when you need intelligence above 14.0, and Grok 4.3 (Non-reasoning) when 14.0 is enough.
| Metric | GPT-5.5 (High) | Grok 4.3 (Non-reasoning) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 37.0 | 14.0 | −62.2% Grok 4.3 (Non-reasoni… is 62.2% less intelligent |
| Total AA cost (lower is better) | $3,410.76 | $250.37 | −92.7% Grok 4.3 (Non-reasoni… is 92.7% cheaper |
| End-to-end time (lower is better) | 36.31s | 5.86s | −83.9% Grok 4.3 (Non-reasoni… is 83.9% faster |
| Price per 1M tokens (in / out) | $5.00 / $30.0 | $1.25 / $2.50 | |
| Input modalities | Text, Image | Text, Image |
Grok 4.3 (Non-reasoning) vs GPT-5.5 (High): 62.2% less intelligence, 92.7% less cost to run the AA benchmark, and 83.9% faster end-to-end.
Today's Pareto frontier
Against the frontier
- GPT-5.5 (High) is off the frontier: at the same or lower cost, Kimi K3.1 Pro scores 55.10 for $3117.
- Grok 4.3 (Non-reasoning) is off the frontier: at the same or lower cost, MiMo-V2.6-Pro scores 46.30 for $207.
GPT-5.5 (High)Grok 4.3 (Non-reasoning)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-5-5-high/grok-4-3-non-reasoning · Markdown: /api/v1/compare/gpt-5-5-high/grok-4-3-non-reasoning?format=md · llms.txt · agent skill