GPT-5.5 (Medium) vs Grok 4.3 (Non-reasoning)
Which is better for the money: GPT-5.5 (Medium) 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 (Medium) scores 19.8 points higher (33.8 vs 14.0) but costs 8.4× as much to run the benchmark ($2095 vs $250; flagship vs mid-range cost classes). They are not alternatives at one budget: pick GPT-5.5 (Medium) when you need intelligence above 14.0, and Grok 4.3 (Non-reasoning) when 14.0 is enough.
| Metric | GPT-5.5 (Medium) | Grok 4.3 (Non-reasoning) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 33.8 | 14.0 | −58.6% Grok 4.3 (Non-reasoni… is 58.6% less intelligent |
| Total AA cost (lower is better) | $2,095.12 | $250.37 | −88.0% Grok 4.3 (Non-reasoni… is 88.0% cheaper |
| End-to-end time (lower is better) | 12.31s | 5.86s | −52.4% Grok 4.3 (Non-reasoni… is 52.4% 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 (Medium): 58.6% less intelligence, 88.0% less cost to run the AA benchmark, and 52.4% faster end-to-end.
Today's Pareto frontier
Against the frontier
- GPT-5.5 (Medium) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
- 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 (Medium)Grok 4.3 (Non-reasoning)Today's Pareto frontierEvery other model
Matchup
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