GPT-6 Astra (Low) vs Grok 4.3 (Non-reasoning)
Which is better for the money: GPT-6 Astra (Low) 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-6 Astra (Low) scores 31.8 points higher (45.8 vs 14.0) but costs 7.1× as much to run the benchmark ($1537 vs $216; premium vs mid-range cost classes). They are not alternatives at one budget: pick GPT-6 Astra (Low) when you need intelligence above 14.0, and Grok 4.3 (Non-reasoning) when 14.0 is enough.
| Metric | GPT-6 Astra (Low) | Grok 4.3 (Non-reasoning) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 45.8 | 14.0 | −69.4% Grok 4.3 (Non-reasoni… is 69.4% less intelligent |
| Total AA cost (lower is better) | $1,536.78 | $215.93 | −85.9% Grok 4.3 (Non-reasoni… is 85.9% cheaper |
| End-to-end time (lower is better) | 12.66s | 5.81s | −54.1% Grok 4.3 (Non-reasoni… is 54.1% 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 (Low): 69.4% less intelligence, 85.9% less cost to run the AA benchmark, and 54.1% faster end-to-end.
Today's Pareto frontier
Against the frontier
- GPT-6 Astra (Low) 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-6 Astra (Low)Grok 4.3 (Non-reasoning)Today's Pareto frontierEvery other model
Matchup
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