GPT-6 Astra (High) vs Grok 4.3 (Non-reasoning)
Which is better for the money: GPT-6 Astra (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 2026-10-27.
Trade-off
Verdict
Depends on your budget
GPT-6 Astra (High) scores 36.9 points higher (50.9 vs 14.0) but costs 14× as much to run the benchmark ($2925 vs $216; flagship vs mid-range cost classes). They are not alternatives at one budget: pick GPT-6 Astra (High) when you need intelligence above 14.0, and Grok 4.3 (Non-reasoning) when 14.0 is enough.
| Metric | GPT-6 Astra (High) | Grok 4.3 (Non-reasoning) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 50.9 | 14.0 | −72.5% Grok 4.3 (Non-reasoni… is 72.5% less intelligent |
| Total AA cost (lower is better) | $2,925.01 | $215.93 | −92.6% Grok 4.3 (Non-reasoni… is 92.6% cheaper |
| End-to-end time (lower is better) | 70.19s | 5.71s | −91.9% Grok 4.3 (Non-reasoni… is 91.9% faster |
| Price per 1M tokens (in / out) | $10.0 / $50.0 | $1.25 / $2.50 | |
| Input modalities | Text, Image | Text, Image |
Grok 4.3 (Non-reasoning) vs GPT-6 Astra (High): 72.5% less intelligence, 92.6% less cost to run the AA benchmark, and 91.9% faster end-to-end.
Today's Pareto frontier
Against the frontier
- GPT-6 Astra (High) is off the frontier: at the same or lower cost, Claude Opus 5.5 (High, Default Fallback) scores 53.60 for $2172.
- 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-6 Astra (High)Grok 4.3 (Non-reasoning)Today's Pareto frontierEvery other model
Matchup
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