GPT-6 Astra (Xhigh) vs Grok 4.6 (Low)
Which is better for the money: GPT-6 Astra (Xhigh) by OpenAI or Grok 4.6 (Low) 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-6 Astra (Xhigh) scores 17.3 points higher (52.4 vs 35.1) but costs 6.2× as much to run the benchmark ($3803 vs $614; flagship vs premium cost classes). They are not alternatives at one budget: pick GPT-6 Astra (Xhigh) when you need intelligence above 35.1, and Grok 4.6 (Low) when 35.1 is enough.
| Metric | GPT-6 Astra (Xhigh) | Grok 4.6 (Low) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 52.4 | 35.1 | −33.0% Grok 4.6 (Low) is 33.0% less intelligent |
| Total AA cost (lower is better) | $3,802.98 | $613.92 | −83.9% Grok 4.6 (Low) is 83.9% cheaper |
| End-to-end time (lower is better) | 188.57s | 13.31s | −92.9% Grok 4.6 (Low) is 92.9% faster |
| Price per 1M tokens (in / out) | $10.0 / $50.0 | $2.00 / $6.00 | |
| Input modalities | Text, Image | Text, Image |
Grok 4.6 (Low) vs GPT-6 Astra (Xhigh): 33.0% less intelligence, 83.9% less cost to run the AA benchmark, and 92.9% 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 4.6 (Low) is off the frontier: at the same or lower cost, GPT-6.1 Sol (High) scores 50.20 for $521.
GPT-6 Astra (Xhigh)Grok 4.6 (Low)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-6-astra-xhigh/grok-4-6-low · Markdown: /api/v1/compare/gpt-6-astra-xhigh/grok-4-6-low?format=md · llms.txt · agent skill