GPT-6 Astra (Xhigh) vs Grok 4.3 (Non-reasoning)
Which is better for the money: GPT-6 Astra (Xhigh) 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 (Xhigh) scores 38.4 points higher (52.4 vs 14.0) but costs 18× as much to run the benchmark ($3803 vs $216; flagship vs mid-range cost classes). They are not alternatives at one budget: pick GPT-6 Astra (Xhigh) when you need intelligence above 14.0, and Grok 4.3 (Non-reasoning) when 14.0 is enough.
| Metric | GPT-6 Astra (Xhigh) | Grok 4.3 (Non-reasoning) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 52.4 | 14.0 | −73.3% Grok 4.3 (Non-reasoni… is 73.3% less intelligent |
| Total AA cost (lower is better) | $3,802.98 | $215.93 | −94.3% Grok 4.3 (Non-reasoni… is 94.3% cheaper |
| End-to-end time (lower is better) | 182.46s | 5.71s | −96.9% Grok 4.3 (Non-reasoni… is 96.9% 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 (Xhigh): 73.3% less intelligence, 94.3% less cost to run the AA benchmark, and 96.9% faster end-to-end.
Today's Pareto frontier
Against the frontier
- GPT-6 Astra (Xhigh) 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-6 Astra (Xhigh)Grok 4.3 (Non-reasoning)Today's Pareto frontierEvery other model
Matchup
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