GPT-6.1 Terra (High) vs Grok 4.6 (Xhigh)
Which is better for the money: GPT-6.1 Terra (High) by OpenAI or Grok 4.6 (Xhigh) 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
Grok 4.6 (Xhigh) scores 0.3 points higher (44.2 vs 43.9) but costs 9.4× as much to run the benchmark ($2242 vs $239; flagship vs mid-range cost classes). They are not alternatives at one budget: pick Grok 4.6 (Xhigh) when you need intelligence above 43.9, and GPT-6.1 Terra (High) when 43.9 is enough.
| Metric | GPT-6.1 Terra (High) | Grok 4.6 (Xhigh) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 43.9 | 44.2 | +0.7% Grok 4.6 (Xhigh) is 0.7% more intelligent |
| Total AA cost (lower is better) | $238.53 | $2,241.91 | +839.9% Grok 4.6 (Xhigh) is 9.4× more expensive |
| End-to-end time (lower is better) | 11.16s | 40.24s | +260.6% Grok 4.6 (Xhigh) is 260.6% slower |
| Price per 1M tokens (in / out) | $1.00 / $5.00 | $2.00 / $6.00 | |
| Input modalities | Text, Image | Text, Image |
Grok 4.6 (Xhigh) vs GPT-6.1 Terra (High): 0.7% more intelligence, 839.9% more cost to run the AA benchmark, and 260.6% slower end-to-end.
Today's Pareto frontier
Against the frontier
- GPT-6.1 Terra (High) is off the frontier: at the same or lower cost, MiMo-V2.6-Pro scores 46.30 for $207.
- Grok 4.6 (Xhigh) is off the frontier: at the same or lower cost, Claude Opus 5.5 (High, Default Fallback) scores 53.60 for $2172.
GPT-6.1 Terra (High)Grok 4.6 (Xhigh)Today's Pareto frontierEvery other model
Matchup
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